Main entry: considerable
Definition: large or relatively large in number or amount or extent or degree
Usage: a considerable quantity; the economy was a considerable issue in the campaign; went to considerable trouble for us; spent a considerable amount of time on the problem
Antonyms: inconsiderable
Definition: too small or unimportant to merit attention
Antonyms: untidy
Definition: not neat and tidy
Antonyms: unhealthy
Definition: not in or exhibiting good health in body or mind
Antonyms: unrespectable
Definition: unworthy of respect
Antonyms: insignificant, unimportant
Definition: devoid of importance, meaning, or force
Antonyms: nonsignificant
Definition: attributable to chance
Antonyms: insubstantial, unreal, unsubstantial
Definition: lacking material form or substance; unreal