A person or thing that hefts or lifts heavy objects.
Agent noun formed from 'heft' plus the -er suffix, following English's productive pattern of creating noun-formers from verbs to describe someone who performs an action.
The word 'hefter' is quite rare because we usually just say 'someone lifted it' rather than calling them a 'hefter,' but English grammar allows us to create these specialized roles whenever we need them—which shows how flexible and creative language can be.
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