derision - contemptuous laughter

bait, tantalise, tantalize, taunt, razz, twit, tease, cod, rag, rally, ride - harass with persistent criticism or carping; "The children teased the new teacher"; "Don't ride me so hard over my failure"; "His fellow workers razzed him when he wore a jacket and tie"

brush aside, brush off, discount, dismiss, disregard, ignore, push aside - bar from attention or consideration; "She dismissed his advances"