clever – stupid

good – wicked

full – empty

incomplete – full

open – obscure

simple – compound

skilful – awkward

complex – elementary

handsome – homely

merry – tedious

funny – deplorable

cloudy – serene

hostile - good-natured

awful – splendid

spiteful – friendly

obligatory – optional

chromatic – monochrome

black-and-white – variegated

honest – unfair

loyal – false

correct – wrong

deceitful – regular

slim – dissonant

obstinate – compliant

persistent – temporary

urgent – retarded

permanent – ephemeral

convex – concave

unsteady – standing

lean – impressive

scant – magnificent

wealthy – meagre

robust – diseased

sick – salubrious

attractive – repulsive

repellent – alluring

sleek – rough

tender – rigid

mighty – slight

concluding - incipient