The term "yes-man" is a modern English compound, first attested in the early 20th century. It is formed from the common affirmative word "yes," which itself originates from Old English expressions of agreement, and "man," a word of Germanic origin for a person. The compound's logic is transparently literal, describing a person whose defining characteristic is to say "yes." It evolved specifically within the context of hierarchical organizations and power dynamics, capturing the image of a subservient, uncritical follower who prioritizes compliance and flattery over independent judgment or honesty.

Structure: yes + man - yes: From Old English gēse, gīse, an expression of affirmation or agreement. - man: From Old English mann, meaning an adult male human being or person.