IPA: /ˌpɜːrsəˈvɛrətɪv/
KK: /pɚˈsɛvəˌreɪtɪv/
Relating to the act of continuing to do something despite difficulties or obstacles.
His perseverative behavior in solving the puzzle impressed everyone.
Perseverative → It is formed from "per-" (meaning through) and "severare" (meaning to sever or cut off). The word describes the act of continuing steadfastly through difficulties, as if cutting through obstacles.
Think of 'through' ('per-') and 'cutting off' ('severare') to remember that 'perseverative' means to continue steadfastly despite challenges.