hold back

verb

1. hold back, as of a danger or an enemy; check the expansion or influence of"Arrest the downward trend"
2. refrain from doing"she forbore a snicker"
3. wait before acting"the scientists held off announcing their results until they repeated the experiment"
4. secure and keep for possible future use or application"The landlord retained the security deposit"
5. hold back; keep from being perceived by others"She conceals her anger well"
6. prevent the action or expression of"hold back your anger"