adjective
thinner; -nest
[also more ~; most ~]
having a small distance between the top and bottom or front and back surfaces :not thick
not having a lot of extra flesh on the body :not fat
synonyms see2lean</SYNR
not growing closely together
having less than the usual, original, or needed number or amount
of a liquid :flowing very easily :containing a lot of water
having less oxygen than normal
easy to see through
not large or impressive
not very good, useful, etc. :weak
of a voice :weak and high
(a) thin skin
disappear/vanish into thin air
to disappear completely in a way that is mysterious
have a thin time (of it)
Brit :to be in a difficult situation especially because you do not have enough money
on thin ice
out of thin air
used to say that someone or something appears in a sudden and unexpected way
the thin end of the wedge
Brit :the beginning of something that will become more serious, unpleasant, etc.
thin on the ground
Brit :existing or occurring in very small amounts
through thick and thin
verb
thins; thinned; thinning
to make (something or someone) thin or thinner or to become thin or thinner: such as
to become less crowded, close together, or full [no obj]
[+ obj] :to make (a liquid) less thick by adding water or some other liquid to it
[no obj] of a person's hair :to become less thick as more hairs fall out over time
[no obj] of fog, smoke, etc. :to become easier to see through :to become less thick or dense
to become less fat or to make (someone) less fat [no obj]
usually + down
adverb
thinner; -nest
[also more ~; most ~] :in a way that makes thin pieces, layers, etc.