Persistent(adjective)
Meaning- Continuing to exist or occur over a prolonged period.
Hindi meaning:निरंतर दीर्घस्थायी
Synonyms: Lasting, Relentless, Continuing, Unceasing, Never-ending
Antonyms: Inconstant, Inconsistent, Intermittent
Example: Persistent heavy rain held up work on the bridge for more than a week.
Trick to remember: mera assistant persistent kam kar raha h 
