1. weight; heaviness: It was a rather flimsy chair, without much heft to it.
  2. significance or importance.
  3. Archaic. the bulk or main part.

verb (used with object)

  1. to test the weight of by lifting and balancing: He hefted the spear for a few moments, and then flung it at the foe.
  2. to heave; hoist.

verb (tr)

  1. to assess the weight of (something) by lifting
  2. to lift


  1. US weight
  2. US the main part

“to lift,” 1660s, from heft (n.). Related: Hefted; hefting.


mid-15c., “weight, heaviness, quality of weight,” from heave on analogy of thieve/theft, weave/weft, etc.; also influenced by heft, obsolete past participle of heave.

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