Second-person singular present simple form of fear(verb)
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Use "fearest" in a sentence
"And he said, Lay not thine hand upon the lad, neither do thou any thing unto him: for now I know that thou fearest God, seeing thou hast not withheld thy son, thine only son from me."
"If this thou fearest, be sure there's nought thou wouldst not fear."
"And he said, Lay not thine hand upon the lad, neither do thou anything unto him: for now I know that thou fearest"