sullen

bad tempered, gloomy

tawdry

showy but cheap

rancor

long lived bitterness or resentfullness

rue

bitterly regret

surreptitious

kept secret, especially because it might not be approved of

irascible

easily angered

malice

desire to do evil

writhe

continual twisting and contortions

taciturn

reserved or uncommunicative

servile

willingness to serve others