Synonyms for Narrow:

adj.

clannish (adjective)
restrictive.
confined, restricted (adjective)
tapering, near, small, tight, precarious, scant, cramped, scanty, strait, limited, confining, meager, shrunken, tapered, paltry, close, slim, slender, spare, precise, exclusive, thin, fine, attenuated, linear.
intolerant, small-minded (adjective)
conventional, parochial, prejudiced, inflexible, illiberal, conservative, dogmatic, narrow-minded.
limited (adjective)
limited.
little (adjective)
delicate, little, paltry, succinct, low, diminutive, few, compact, scanty, small, meager, brief, puny, minute, concise, short.
narrow (adjective)
scrawny, cramped, slim, skeletal, thin, willowy, fine, tight, skinny, lanky, lean, tenuous, slender.
narrow-minded (adjective)
insular, little.
stingy (adjective)
close.
unoriginal (adjective)
conventional.

n.

closed, rigid, stubborn, inflexible, imprudent, bloody-minded, ill-advised, irrational. dangerous, hard, arduous, challenging, near, tough, be an effort, taxing, complicated, endangered, difficult, precarious, punishing, demanding, unsafe. limiting, restrictive, under control, specific, prohibitive, within limits, exclusive. local, insular, small town, provincial. narrow (noun)
constringe, constrict, narrowing, narrow-minded, self-opinionated, dogmatic, illiberal, limited, straplike, petty, careful, pin down, peg down, constrictive, contract, thin, close-minded, tapering, narrow down, closed-minded, minute, strait, slender, tapered, constricting, bare, nail down, specify, narrowed, marginal, small-minded, opinionated, intolerant, dogmatical, opinionative.

v.

change (verb)
contract.
narrow (verb)
slenderize, tighten.
reduce, simplify (verb)
contract, tighten, constrict.

Other synonyms:

rigid, conservative, provincial, insular, conventional. confining, local, across. flare, snug, collapse. biased
prejudiced.
contract
constringe.
lineal
linear.

Usage examples for narrow

  1. As I advanced the valley began to narrow – In the Rocky Mountains by W. H. G. Kingston
  2. For reasons of his own, Joseph gave narrow attention to these signs. – The Nether World by George Gissing
  3. And while I listen I must feel how very narrow to so speak is. – A Woman's Will by Anne Warner