English Common Opposite Words List alive – dead all – none allow – forbid already – not yet always – never ancient – modern amateur – professional amuse – bore ancestor – descendant angel – devil animal – human annoy – satisfy answer – ask answer – question antonym – synonym apart – together argue – agree arrest – free arrival – departure arrive – depart artificial – natural ascent – descent ask – answer asleep – awake attack – defend attack – defence attic – cellar autumn – spring awake – asleep awful – nice back – in front of backward – forward bad – good bottom – top boy – girl brave – cowardly break – fix broad – narrow careful – careless careless – careful catch – miss ceiling – floor cellar – attic certainly – probably clever – stupid close – open