hold in

Verb (3)

1. close in; darkness enclosed him"Synonyms: enclosehold inconfine
2. lessen the intensity of; temper; hold in restraint; hold or keep within limits“moderate your alcohol intake”“hold your tongue”“hold your temper”“control your anger”Synonyms: controlhold inholdcontaincheckcurbmoderate
3. hold back; keep from being perceived by others“She conceals her anger well”Synonyms: concealhold backhold in