a servile, submissive, or acquiescent subordinate, assistant, or associate; sycophant
Collins Concise English Dictionary © HarperCollins Publishers::
ˈyes-ˌman,
n. [countable], pl. -men.
WordReference Random House Unabridged Dictionary of American English © 2025- a person who always agrees with superiors, no matter what his or her own personal beliefs are.
yes-man
(yes′man′),USA pronunciation n., pl. -men.
- a person who, regardless of actual attitude, always expresses agreement with his or her supervisor, superior, etc.;
sycophant.
- 1910–15
'yes man' also found in these entries (note: many are not synonyms or translations):