Takashi's Japanese Dictionary

A blog for learning Japanese that introduces Japanese slang words and Idioms!

  • Home
  • Dictionary Tools ▾
    • Furigana and Definition Lookup
    • Japanese Synonym Finder
    • Katakana Word Converter
  • Blog Posts ▾
    • Latest Posts
    • Phrases by Topic
    • Slang
    • Idiom
    • Column
    • Grammar
  • Lesson Slides ▾
    • For Complete Beginners
    • For Intermediate/Advanced Learners
  • Vocab List
  • Social Media
  • About
  • 英語学習サイト
You are here: Home / Featured Posts / Meaning and Difference of ガチ (gachi) and マジ (maji) in Japanese

Meaning and Difference of ガチ (gachi) and マジ (maji) in Japanese

September 14, 2018

Table of Contents

  • Definition of ガチ (gachi)
    • 1. Usage as an Adverb
    • 2. Usage as an Adjective
  • Definition of マジ
  • Differences between ガチ and マジ
  • Related Word: ガチ勢 (がちぜい, gachi zei)
  • Example Sentences
  • Related Post
    • Meaning of ガチ恋 in Japanese Slang
    • List of Japanese Words for “Very/Really”: Synonyms of とても (totemo)

Definition of ガチ (gachi)

ガチ (がち, gachi) is a Japanese slang term that means “(something/someone is) so serious or real”. It is often used when you want to emphasise that there are no jokes or exaggeration at all in their statements.

1. Usage as an Adverb

Usually, ガチ is used as an adverb “ガチで”, e.g. “ガチでうまい”  meaning “seriously tasty” and “ガチで勉強べんきょうする” meaning “study seriously”. In particular, “ガチでやばい” is a very common phrase that means someone/something is so bad (or good, sometimes). For example, it is often used to describe a catastrophic typhoon, or someone who is so weird, abnormal and scary.

2. Usage as an Adjective

ガチ is also used as an adjective “ガチの” or “ガチな” to indicate that something is so serious, real, and/or important. For instance, “ガチの天才てんさい” means “bona fide genius” and “ガチな試合しあい” means “serious match”.

Definition of マジ

マジ is probably the most common slang word in Japanese. It is basically a casual word for “とても (very)”, and is usually used as “マジ” or “マジで” before an adjective. For example, “マジ(で)うまい” means “so tasty” and “マジ(で)疲つかれた” means “(I’m) so tired”. As in ガチ, マジ is often combined with やばい to describe something bad or good. In a casual conversation, マジ is also frequently used as a short response to describe one’s surprise, like “Really?” in English.

Differences between ガチ and マジ

Although ガチ and マジ have very similar vibes and meanings, there are some differences. First of all, ガチ contains a younger and more casual vibe than マジ; therefore, if you are much older than the young generations, it’s probably better to avoid using ガチ (マジ also sounds young, but it is used among wider generations). Secondly, マジ is much more frequently used than ガチ (regardless of age), and therefore when people use ガチ instead of マジ, it sounds a bit more serious, e.g. ガチでやばい台風たいふう (seriously dangerous typhoon) sounds a bit more dangerous and serious than “マジでやばい台風” (so dangerous typhoon).

Related Word: ガチ勢 (がちぜい, gachi zei)

ガチ勢ぜい (gachi zei) is an internet slang term that describes people who are very serious about something. It is often used to describe serious/competitive gamers, but can be used for anyone who is adept at and serious about something. Sometimes, it contains a negative connotation like “too serious”, as shown in Ex4.

Example Sentences

Ex1
A: ネット詐欺さぎで100万円まんえん騙だまし取とられた
B: え?それガチでやばくない?
A: I’ve lost one million yen through an online fraud
B: What? Isn’t it seriously a big deal?

Ex2
ガチのコスプレイヤーを電車でんしゃで見みた。
I saw a serious cosplayer on the train.

Ex3
スマブラガチ勢ぜいと試合しあいやったらボコボコにされた
I had a match of Super Smash Bros with its gachizei (expert) and got thrashed.

Ex4
楽たのしくサッカーやってたのに、ガチ勢ぜいが加くわわってからつまんなくなった。
We were playing football for fun, but after gachizei joined us, it became boring.
(Here, gachizei indicates people who are always serious about playing football) )

Related Post

Meaning of ガチ恋 in Japanese Slang

ガチ恋

List of Japanese Words for “Very/Really”: Synonyms of とても (totemo)

30+ Japanese Words for “Very” and Their Nuances

Filed Under: Featured Posts, Slang

Related Posts

  • ドヤ顔 (doya gao) Meaning ‘Showing-Off Face’ in Japanese

  • 20 “Untranslatable” Japanese Phrases with Specific Meanings

  • Eat Grass on the Road? Funny Japanese Idioms about Plants

    Eat Grass on the Road? Funny Japanese Idioms about Plants

  • Japanese Slang 詰んだ (tsunda) Meaning “I’m checkmated”

  • Zagin De Shīsū: Japanese “Back Slang” From 1980s Explained

    Zagin De Shīsū: Japanese “Back Slang” From 1980s Explained

Featured Posts:

  • Japanese Conversation Practice to Master 気-related Idioms
  • “Gakkī Loss”: Meaning of ロス (“Loss”) in Japanese
  • 30+ Japanese Words for “Very”: Synonyms of とても (totemo)
  • 40 Ways of Saying "Many" in Japanese (Ooi, Ippai, Takusan, and More...)
  • 8 Funny and Cute Japanese Cat Idioms
  • Success Story of Ichiro Suzuki: What He Means to Japanese Baseball Fans

Popular Posts:

  • Myth and Meaning of “The moon is beautiful, isn’t it?” in Japanese
  • Meaning of 卍 (manji) and マジ卍 (Maji manji) in Japanese
  • Real Meanings of “Hentai” in Japanese
  • List of Similar and Confusing Kanji With Different Meanings
  • What 賢者タイム (Kenja Time) Means in Japanese Slang
  • Boku, Ore, Watashi, Atashi: 15 Japanese Person Pronouns
  • 凸, 凹, 〆, 卍: Meaning of Weird and Funny Japanese Kanji
  • 4 Meanings of ノリ (Nori) in Japanese Slang
  • 40 Japanese Words for “Many/Much” (Ooi, Ippai, Takusan, …)
  • Funny Japanese Gaming Slang Terms
  • 5 Meanings of ペラペラ (pera pera) in Japanese
  • Meaning and Usage of なんでやねん (nandeyanen) in Japanese
  • 9 Essential Kansai Dialect (Kansai-ben) Words and Phrases
  • Meaning of ぼっち (Bocchi) and クリぼっち (Kuri Bocchi) in Japanese Slang
  • Japanese Slang 帰宅部 (kitaku bu) Meaning “Go-Home Club”
  • 40 Old Japanese Slang Words to Sound Funny (or Weird)
  • とにかく (Tonikaku) Means MORE THAN “Anyway”
  • Meaning of Kaedama, Menkata and Barikata of Ramen Noodles
  • あけおめ (Akeome): Casual Japanese New Year’s Greeting
  • 20 Japanese X (Twitter) Slang Words
  • 30+ Japanese Words for “Very” and Their Nuances
  • 闇鍋 (yaminabe): Meaning “Dark Hot Pot” with Random Ingredients
  • 5 Meanings of 気 (ki) and 30 気-related Japanese Phrases
  • Japanese Wasei-Eigo List (“Japlish”) and Their Meanings
  • Essential Grammar in Kansai Dialect (関西弁, Kansai ben)
  • List of 50+ Japanese Words to Describe Personality
  • Japanese Words and Phrases About Love
  • Meaning of “Paper Driver” in Japlish (Japanese English)
  • Slang Meaning of 全然 (Zenzen) Without ない (Nai)
  • 20 Japanese Words For Rain

Search on Takashionary
(e.g. 'food', 'cat', 'idiom')

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

ブログランキング・にほんブログ村へPVアクセスランキング にほんブログ村

Search on Takashionary
(e.g. 'food', 'cat', 'idiom')

Trending Posts

  • Myth and Meaning of “The moon is beautiful, isn’t it?” in Japanese
  • List of Similar and Confusing Kanji With Different Meanings
  • 凸, 凹, 〆, 卍: Meaning of Weird and Funny Japanese Kanji
  • 40 Old Japanese Slang Words to Sound Funny (or Weird)
  • 8 Funny and Cute Japanese Cat Idioms
  • とにかく (Tonikaku) Means MORE THAN “Anyway”
  • 5 Meanings of 気 (ki) and 30 気-related Japanese Phrases
  • What 賢者タイム (Kenja Time) Means in Japanese Slang
  • 20 Japanese Words For Rain
  • List of Japanese Abbreviated Words and Phrases
  • Boku, Ore, Watashi, Atashi: 15 Japanese Person Pronouns
  • List of 50+ Japanese Words to Describe Personality
  • Meaning of 卍 (manji) and マジ卍 (Maji manji) in Japanese
  • Meaning of 二刀流 (Nitouryu) “Expert of Two Things” in Japanese
  • Real Meanings of “Hentai” in Japanese
  • Meaning of Kaedama, Menkata and Barikata of Ramen Noodles
  • 20 Japanese X (Twitter) Slang Words
  • 30+ Japanese Words for “Very” and Their Nuances
  • Funny Japanese Gaming Slang Terms
  • Japanese Slang 帰宅部 (kitaku bu) Meaning “Go-Home Club”
  • 5 Meanings of ペラペラ (pera pera) in Japanese
  • にわか (niwaka) Meaning “Newbie” in Japanese Slang
  • Japanese Money-Related Idioms and Slang Words
  • Japanese Words and Phrases About Love
  • 女たらし (onna tarashi) Meaning ‘Lady’s Man’ in Japanese
  • Meaning of ぼっち (Bocchi) and クリぼっち (Kuri Bocchi) in Japanese Slang
  • What’s 合コン (gōkon) and 街コン (machikon) in Japanese
  • Japanese Old Slang 社会の窓 (shakai no mado): Meaning
  • Differences Between 切る (kiru) and 尽くす (tsukusu) as Suffix
  • 4 Meanings of ノリ (Nori) in Japanese Slang

Popular Posts

  • Myth and Meaning of “The moon is beautiful, isn’t it?” in Japanese
  • Meaning of 卍 (manji) and マジ卍 (Maji manji) in Japanese
  • Real Meanings of “Hentai” in Japanese
  • 4 Meanings of ノリ (Nori) in Japanese Slang
  • 40 Japanese Words for “Many/Much” (Ooi, Ippai, Takusan, …)
  • 9 Essential Kansai Dialect (Kansai-ben) Words and Phrases
  • List of Similar and Confusing Kanji With Different Meanings
  • Meaning of プロ驚き屋 (“Professional Surprised Man”) in Japanese Slang 2023
  • What 賢者タイム (Kenja Time) Means in Japanese Slang
  • 5 Meanings of ペラペラ (pera pera) in Japanese

Words by Theme

  • 40 Japanese Words for “Many/Much” (Ooi, Ippai, Takusan, …)
  • 9 Essential Kansai Dialect (Kansai-ben) Words and Phrases
  • List of Similar and Confusing Kanji With Different Meanings

Idiom

  • 5 Meanings of 気 (ki) and 30 気-related Japanese Phrases
  • List of 50+ Japanese Words to Describe Personality
  • Four Meanings of 坊主 (Bouzu) in Japanese

Japlish

  • Japanese Wasei-Eigo List (“Japlish”) and Their Meanings
  • Meaning of “Paper Driver” in Japlish (Japanese English)
  • 深夜テンション (shinya tension) Meaning “Midnight High” in Japanese Slang

Slang

  • 5 Meanings of ペラペラ (pera pera) in Japanese
  • ドヤ顔 (doya gao) Meaning ‘Showing-Off Face’ in Japanese
  • 女たらし (onna tarashi) Meaning ‘Lady’s Man’ in Japanese

Column

  • Myth and Meaning of “The moon is beautiful, isn’t it?” in Japanese
  • Meaning and Origin of Reiwa (令和) Era in Japanese
  • イチロー (Ichiro): What He Means to Japanese Baseball Fans

Grammar

  • Essential Grammar in Kansai Dialect (関西弁, Kansai ben)
  • Slang Meaning of 全然 (Zenzen) Without ない (Nai)
  • Grammar and Differences Between に (ni) and で (de) in Japanese

日本語記事

  • 「背水の陣」のように決死の覚悟で挑む状況を英語で
  • 「遠慮のかたまり」と「遠慮する」を英語で説明
  • 「猫を被る」を英語に訳す
  • 「一理ある」を英語に訳す

Categories

Copyright © 2026 · All Rights Reserved