"disposed to yield, submissive," 1690s (implied in acquiescently), from Latin acquiescentem (nominative acquiescens), present participle of acquiescere "become quiet, remain at rest" (see acquiesce).
too acquiescent to challenge authority
acquaint
acquaintance
acquainted
acquiesce
acquiescence
acquiescent
acquire
acquired
acquirement
acquisition
acquisitive