Definition of in (too) deep
- He wanted to get out of the deal, but he was in too deep.
: besides, also
: to an excessive degree : excessively
: to such a degree as to be regrettable
: extending far from some surface or area: such as
: extending far downward
: extending well inward from an outer surface
: to a great depth : deeply
: far on : late
: near the outer limits of the playing area
: a vast or immeasurable extent : abyss
: the extent of surrounding space or time
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