Synonyms for Strange:

adj.

all (adjective)
unusual, unknown.
deviating, unfamiliar (adjective)
fantastic, exceptional, bizarre, outlandish, off, curious, newfangled, unusual, erratic, rare, extraordinary, idiosyncratic, abnormal, singular, peculiar, aberrant, atypical, quaint, funny, oddball, new, uncommon, irregular, eccentric, odd, different, weird.
different (adjective)
unusual.
exceptional (adjective)
uncustomary.
exotic, foreign (adjective)
faraway, unknown, isolated, outside, novel, unrelated, alien, external, apart, detached, irrelevant, unfamiliar.
extraneous (adjective)
immaterial, extrinsic, nonessential, dissociated, estranged, separated, disjoint, inappropriate, unessential, external, separate, extraneous, other, parenthetical, outer, foreign-born, segregated, irrelevant, disconnected, disaffiliated, inadmissible, inapplicable, removed, extraterrestrial, detached, exotic, unaffiliated, impertinent, eerie, Unallied, outside, alien, unrelated, outlandish, foreign.
irregular (adjective)
exceptional, irregular.
new (adjective)
newfangled.
nonconforming (adjective)
funny, quirky, deranged, novel, nonconforming, extraordinary, irregular, incompatible, bizarre, fey, exceptional, oddity, different, erratic, freakish, unfamiliar, anomalous, inconsistent, uncommon, curious, incongruous, misfit, eccentric, atypical, unconventional, peculiar, unusual, uncustomary, singular, unique, off, aberrant, deviant, outlandish, idiosyncratic, odd, crazy, abnormal, un-ordinary, crosspatch, divergent, mismatch, oddball, out of the ordinary, untypical, improper.
spooky (adjective)
eerie.
unusual (adjective)
rare.

n.

strange (noun)
freaky, fantastical, curious, rum, quaint, eerie, oddish, unusual, fantastic, uneasy, foreign, gothic, antic, unfamiliar, rummy, alien, crazy, singular, funny, peculiar, odd, unknown, grotesque, exotic, other, eery, weird.

Other synonyms:

Gothic
gothic.
secret, anonymous, troubling, kooky, surreal, unnatural. cramped, hidden, private. strained, cranky, claustrophobic, uncomfortable, uncertain. unreal. personal. tight. heavy. puzzling
mysterious.

Usage examples for strange

  1. It was so strange – King of the Castle by George Manville Fenn
  2. Does it not feel strange with Mr. Halifax away?" – John Halifax, Gentleman by Dinah Maria Mulock Craik