Trivial
Extra
Secondary
Basic
Answer: Basic
Explanation:
Stimulant
Obstacle
Despair
Destroy
Answer: Obstacle
Aversion
Indifference
Repulsion
Aptitude
Answer: Aptitude
Conceited
Competent
Consistent
Complacent
Answer: Competent
Dissimilar
Sketchy
Superficial
Comprehensive
Answer: Comprehensive
hasty
continuous
Uneven
abrupt
Answer: continuous
bounded
argued
devoted
finalized
Answer: finalized
Decline
Improve
Surpass
Decrease
Answer: Surpass
fatal
harmless
strong
healthy
Answer: fatal
unvaryingly
unscientifically
unknowingly
unreasonably
Answer: unreasonably