"disposed to yield, submissive," 1690s (implied in acquiescently), from Latin acquiescentem (nominative acquiescens), present participle of acquiescere "become quiet, remain at rest" (see acquiesce).
Entries linking to acquiescent
acquiesce v.
1610s, "remain at rest" (a sense now obsolete); 1650s as "agree tacitly, concur," from French acquiescer "to yield or agree to; be at rest," (14c.), from Latin acquiescere/adquiescere "become quiet, remain at rest, rest, repose," thus "be satisfied with, be content," from ad "to" (see ad-) + quiescere "become quiet," from quies (genitive quietis) "rest, quiet" (from PIE root *kweie- "to rest, be quiet"). Related: Acquiesced; acquiescing.