The word(s) "fearest" appears 2 time(s) in 2 verse(s) in Quran in Muhammad Pickthal translation.

(1) And if thou fearest treachery from any folk, then throw back to them (their treaty) fairly. Lo! Allah loveth not the treacherous.

(2) And We inspired the mother of Moses, saying: Suckle him and, when thou fearest for him, then cast him into the river and fear not nor grieve. Lo! We shall bring him back unto thee and shall make him (one) of Our messengers.