Acquiescent

[Sarah]

Resting satisfied or submissive; disposed tacitly to submit;assentive; as, an acquiescent policy.

[Sarah]

A rather sesquipedalian or cocky way of calling someone a [tool]. The said acquiescent tends to be caught off-guard upon hearing they have been called an acquiescent, and thus, become even more so when they do not understand the meaning of the word in immediacy.

[Lanell]

willing to do what other people want:

[Lizzy Liz]

Ready to accept something without protest, or to do what someone else wants.