unconventional

To be unconventional is to act, dress, speak, or otherwise exist out of the bounds of cultural norms. If you eat cheeseburgers for breakfast, that's somewhat unconventional.

Anything that's nonconformist or out of the ordinary can be described as unconventional. Every culture has its own conventions — or norms — and what may be unconventional in one region might be typical in another. The perception of what's unconventional is determined by context.

Definitions of unconventional
  1. adjective
    not conventional or conformist
    unconventional life styles”
    Synonyms:
    alternative
    pertaining to unconventional choices
    bizarre, eccentric, flakey, flaky, freakish, freaky, gonzo, off-the-wall, outlandish, outre
    conspicuously or grossly unconventional or unusual
    devil-may-care, raffish, rakish
    marked by a carefree unconventionality or disreputableness
    far-out, kinky, offbeat, quirky, way-out
    informal terms; strikingly unconventional
    funky
    stylish and modern in an unconventional way
    spaced-out, spacey, spacy
    stupefied by (or as if by) some narcotic drug
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    Antonyms:
    conventional
    following accepted customs and proprieties
    conventional
    unimaginative and conformist
    received
    widely accepted as true or worthy
    customary
    in accordance with convention or custom
    formulaic
    characterized by or in accordance with some formula
    stodgy, stuffy
    excessively conventional and unimaginative and hence dull
    button-down, buttoned-down, conservative
    unimaginatively conventional
    square, straight
    rigidly conventional or old-fashioned
    stereotyped, stereotypic, stereotypical, unimaginative
    lacking spontaneity or originality or individuality
    white-bread
    of or belonging to or representative of the white middle class
    formal
    being in accord with established forms and conventions and requirements (as e.g. of formal dress)
    unoriginal
    not original; not being or productive of something fresh and unusual
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  2. adjective
    not conforming to accepted rules or standards
    “her unconventional dress and hair style”
    Synonyms:
    bohemian
    unconventional in especially appearance and behavior
    go-as-you-please, transgressive
    not bound by rule or law or convention
    irregular, maverick, unorthodox
    independent in behavior or thought
    original
    being or productive of something fresh and unusual; or being as first made or thought of
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    Antonyms:
    conventional
    following accepted customs and proprieties
    received
    widely accepted as true or worthy
    customary
    in accordance with convention or custom
    formulaic
    characterized by or in accordance with some formula
    stodgy, stuffy
    excessively conventional and unimaginative and hence dull
    formal
    being in accord with established forms and conventions and requirements (as e.g. of formal dress)
    unoriginal
    not original; not being or productive of something fresh and unusual
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  3. adjective
    not conforming to legality, moral law, or social convention
    “an unconventional marriage”
    synonyms: improper, unlawful
    irregular
    contrary to rule or accepted order or general practice
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