Answer:

grin

AnswerCrossword Clue
GRINCheshire cat's signature feature
GRINToothy smile
GRINBeam
GRINSmall beam
GRIN... and bear it
GRINSheepish look
GRINSmile
GRINSmall beam?
GRINPrankster's look
GRINSign of satisfaction
GRINMeaning of the emoticon :-D
GRINUse one's zygomatic muscles
GRINSign of sheepishness
GRINExpression for the Joker
GRINWink accompanier
GRINPut on a happy face
GRINShow pleasure
GRINAlfred E. Neuman feature
GRINShow of amusement
GRINAlfred E. Neuman expression
GRINFriendly look
GRINHappy face
GRINJack-o'-lantern feature
GRINIt may be silly
GRINMouth widener
GRINShow amusement
GRINBroad beam