(US, Canada) A greeting used during the Christmas and winter holiday season to recognize the celebration of many holidays, sometimes starting with Thanksgiving and including Hanukkah, the winter solstice, Christmas, Kwanzaa, and New Year's Day.

plural of happy slapping

(informal) A person who practises happy slapping.

plural of happy slapper

A time of day, usually in the afternoon or early evening, when a bar or pub offers its drinks at a discounted price.

(US, Canada) The greeting said near the holiday Thanksgiving.

(simile, colloquial) Very happy (sometimes with the extra connotations of being carefree or unaware of grimmer realities).

Alternative spelling of trigger-happy

(Britain) A children's card game played with a pack of 44 picture cards that depict a father, mother son and daughter of 11 families mostly having occupational surnames (e.g. Mr Bun the Baker); players have to collect entire families

(simile) Very happy and carefree.