decisive (adj.)

• absolute
• admissible
• alert
• all-out
• apodictic
• apt
• assured
• assuring
• authentic
• authoritative
• bent
• binding
• bound
• categorical
• causal
• causative
• certain
• charged
• circumstantial
• clear
• committed
• complete
• compulsory
• conclusive
• constitutive
• convincing
• critical
• crucial
• cumulative
• damning
• decided
• dedicated
• definite
• definitive
• determinate
• determinative
• determined
• devoted
• dictated
• documentary
• documented
• downright
• earnest
• effectual
• emergent
• entire
• etiological
• evidential
• evidentiary
• exigent
• expeditious
• explicit
• express
• factual
• final
• firsthand
• fixed
• flat
• formative
• global
• hard-and-fast
• hearsay
• immediate
• imperative
• imperious
• implicit
• imposed
• impressive
• incontrovertible
• indicative
• indisputable
• ineluctable
• inevitable
• instant
• instantaneous
• intent
• irrefutable
• irresistible
• irrevocable
• loaded
• mandatory
• masterful
• material
• must
• necessary
• obligatory
• obstinate
• occasional
• originative
• out-and-out
• outright
• overwhelming
• peremptory
• perfect
• persevering
• persistent
• persuasive
• pivotal
• positive
• predestined
• predetermined
• pregnant
• prescriptive
• presumptive
• probative
• prompt
• punctual
• purposeful
• quick
• ready
• relentless
• reliable
• required
• resolute
• resolved
• round
• satisfactory
• satisfying
• self-assured
• self-confident
• serious
• set
• settled
• significant
• sincere
• single-minded
• speedy
• steadfast
• straight
• straight-out
• suggestive
• summary
• sure
• sure-enough
• swift
• symptomatic
• telling
• tenacious
• total
• true
• ultimate
• unambiguous
• unconditional
• unconditioned
• unequivocal
• unhampered
• unhesitating
• univocal
• unlimited
• unmistakable
• unmitigated
• unqualified
• unquestioning
• unreserved
• unrestricted
• unswerving
• unwavering
• utter
• valid
• weighty
• whole
• wholehearted