ac ‧ qui ‧ esce /ˌækwiˈes/ BrE AmE verb [intransitive]
[ Date: 1600-1700 ; Language: French ; Origin: acquiescer , from Latin acquiescere , from ad- 'to' + quiescere 'to be quiet' ]
formal to do what someone else wants, or allow something to happen, even though you do not really agree with it
acquiesce in/to
Oil companies have been accused of acquiescing in the pollution of the ocean.