Rōmaji
yoisho suru
Type
slang
Meaning
to flatter; to act obsequiously towards someone important (as if one lifts them up and enhances their sense of superiority and satisfaction)
Synonym
持ち上げる, 媚を売る, へつらう, ゴマをする, おだてる
Additional Info
This expression comes from よいしょ
Example
彼は上司をよいしょするのがうまい
He is good at flattering his boss.