Answer: parenthesis
AnswerCrossword Clue
PARENTHESISThe smile on an email happy face
PARENTHESIS(or) on a page
PARENTHESISExplanatory insertion.
PARENTHESIS(
PARENTHESISBracket's kin
parenthesisan amplifying or explanatory word, phrase, or sentence inserted in a passage from which it is usually set off by punctuation
parenthesisAn interlude or interval
parenthesisA word, clause, or sentence inserted as an explanation or afterthought into a passage that is grammatically complete without it, in writing usually marked off by curved brackets, dashes, or commas
parenthesisOne or both of a pair of marks () used to include such a word, clause, or sentence