To become thick or thicker.
To become deeper or heavier; gain bulk.
Of a liquid, to approach more nearly a state of solidity; gain firmer consistency; also, to become turbid or cloudy.
To become dark or obscure; specifically, of the weather, etc., to become misty or foggy.
To grow more intense, profound, animated, intricate, etc.; become complicated.
To gain in number or frequency; hence, to crowd; throng.
To become indistinct.
To make thick or thicker.
To increase in depth, or distance between opposite surfaces; hence, figuratively, to make stouter or more substantial; strengthen.
Of liquids, to increase the consistency of; inspissate: as, to thicken gravy with flour; also, to render turbid or cloudy.
To obscure with clouds or mist; befog.
To make more numerous or frequent; redouble: as, to thicken blows.
noun.
A spelling of thick 'un (which see, under thick, a.).