verb
acquiesce
ak-wee-ESS/ˌækwiˈes/
To accept something without protest.
He acquiesces with a resigned nod and accepts the offered umbrella.

Etymology
Becoming quiet or resting developed into being satisfied or content, then agreeing tacitly. This shift connects quietness with accepting something without protest, even reluctantly.
In context
of a man of business, he values my help. Don't you, Leonard?' The challenge was so direct, and the position he was in so daringly put, that he had to acquiesce.
More examples
- She refused to acquiesce in the unfair arrangement.
- They eventually acquiesced to their neighbors' request.
- He kept quiet, apparently acquiescing in the decision.
Forms
acquiesce · acquiesces · acquiesced · acquiescing
acquiescence noun — Acceptance without protest or active resistance.