Simple past tense and past participle of heft.(verb)
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Use "hefted" in a sentence
"Odin hefted the axe over his shoulder and smiled indulgently as the boar reached him."
"Without another word Mountain hefted himself into his own bed."
"It will presumably be finished in another two years, as only parts of the letters U and W remain to be done, and it will then consist of ten colossal volumes, some of which can be conveniently 'hefted' only by a fairly athletic student."