acquiescent
/ˌækwiˈɛs(ə)nt/
adjective
Ready to accept something without protest, or to do what someone else wants.
the unions were acquiescent and there was no overt conflict
compliant,complying,consenting,cooperative,willing,obliging,agreeable,amenable,tractable,persuadable,easily persuaded,pliant,flexible,easy,unprotesting,resigned