keep back

Verb

• hold back; refuse to hand over or share
  • The father is withholding the allowance until the son cleans his room
    

• secure and keep for possible future use or application
  • The landlord retained the security deposit
    
  • I reserve the right to disagree
    

• keep under control; keep in check
  • suppress a smile
    
  • Keep your temper
    
  • keep your cool
    

Related words

• Synonyms: 
  withhold , retain , hold , hold back , restrain , keep