Definitive
adjective
supplying or being a final or conclusive settlement
“a definitive verdict”
Similar: determinate
adjective
clearly defined or formulated; - R.B.Taney
“the plain and unequivocal language of the laws”
Similar: unequivocal
adjective
of recognized authority or excellence
“the definitive work on Greece”
Similar: authoritative, classical, classic
Word family
definitiveness · definitively