Definition of full of shit
- He's full of shit.
: containing as much or as many as is possible or normal
: complete especially in detail, number, or duration
: lacking restraint, check, or qualification
: very, extremely
: straight, squarely
: the highest or fullest state or degree
: the utmost extent
: to become full
: to make full in sewing
: to shrink and thicken (woolen cloth) by moistening, heating, and pressing
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