jolly1
  
  adj.
 (jollier, jolliest)
 happy and cheerful. 
▸informal lively and entertaining.
v.
 (jollies, jollying, jollied)
 informal encourage in a friendly way. 
▸
(jolly someone/thing up)
 make someone or something more jolly.
adv.
 Brit. informal very.
n.
 (pl. jollies)
 Brit. informal a party or celebration.
 
  Phrase
  
  Derivative
  
    - jollily adv.
  - jolliness n.
 
   
  Etymology
  ME: from OFr. jolif, an earlier form of joli ‘pretty’, perh. from ON jól (see Yule).
 
  
    
jolly2
  
  n.
 (pl. jollies)
 a clinker-built ship's boat that is smaller than a cutter.
 
  Etymology
  C18: perh. rel. to yawl.