kid

Synonyms: baby bairn boy child daughter girl infant juvenile lad lass little one son teenager tot youngster youth

Antonyms: adult

Synonyms: bamboozle banter beguile bother cozen delude dupe flimflam fun gull hoax hoodwink jape jest joke jolly josh make fun of make sport of mock pretend rag razz rib roast spoof tease trick

Antonyms: be serious