non-conventional

Not the norm

Non-conventional means not following established standards, methods, or traditions.

The term applies to approaches, weapons, energy sources, or lifestyles that depart from the norm: non-conventional warfare, non-conventional oil extraction.

It overlaps with unconventional but tends toward more technical contexts—military strategy, energy production, medical treatments.

They pursued non-conventional therapies after standard treatments failed.

alternative

unorthodox

Contrary to accepted practice

underground · outsider · subversive · radical · divergent · nonconformist · anti-establishment · rebellious · dissident · maverick

innovative

groundbreaking

Introducing radical new ideas

trailblazing · disruptive · forward-thinking · next-generation · novel · state-of-the-art · advanced · futuristic · pioneering · progressive

creative

avant-garde

Innovative cultural pioneers

imaginative · original · pioneering · surreal · abstract · conceptual · expressive · fanciful · whimsical · inspired

eccentric

quirky

Idiosyncratically unusual

unusual · outlandish · bizarre · idiosyncratic · anomalous · irregular · unique · deviant · atypical · aberrant

Opposites
adherence to established norms and traditions

non-conventionalconventional

Following accepted practices

traditional · orthodox · standard · mainstream · customary

originality and innovation

non-conventionalconventional

Following accepted practices

formulaic · predictable · stock · run-of-the-mill · derivative

Family

conventional, convention, conventions, conventionally, unconventional, conventionality, unconventionality, convene, convened

Familiarity
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Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G