definite

Synonyms: audible bold categorical clean-cut clear-cut clearly defined complete crisp definitive determined distinct distinguishable downright explicit express fixed forthright full graphic incisive marked minute not vague obvious palpable particular plain positive precise pronounced ringing severe sharp silhouetted specific straightforward tangible unambiguous undubitable unequivocal unmistakable visible vivid welldefined well-grounded well-marked

Antonyms: imprecise indefinite indistinct inexact not clear obscure uncertain unclear undefined vague

Synonyms: assigned assured beyond doubt circumscribed convinced decided defined determinate determined established guaranteed limited narrow precise prescribed restricted set settled sure

Antonyms: indeterminate inexact uncertain unfixed unlimited vague