narrowing

nouns

an instance of becoming narrow
is derived from
is a type of (narrower)
any spatial attributes (especially as defined by outline)
"he could barely make out their shapes"
a decrease in width
antonym
is a type of (narrower)
a process of becoming smaller or shorter
the act of making something narrower
is derived from
antonym
is a type of (narrower)
an action that changes the shape of something

adjectives

becoming gradually narrower
"long tapering fingers"; "trousers with tapered legs"
(of circumstances) tending to constrict freedom