sar·cas·tic 
(sär-kăstĭk)
(sär-kăstĭk)adj.
1. Expressing or marked by sarcasm.
2. Given to using sarcasm: a sarcastic friend.
[SARC(ASM) + -astic (as in ENTHUSIASTIC).]
sar·casti·cal·ly adv.
- interscholastic
- interscholastically
- inter se
- intersect
- intersection
- intersectionality
- intersession
- intersessional
- intersex
- intersexual
- intersexuality
- intersexually
- interspace
- interspatial
- interspecies
- interspecific
- intersperse
- interspersedly
- interspersion
- interstate
- interstellar
- interstellar medium
- interstice
- interstitial
- interstitially