Synonyms of the word

nonstandard

• adj. Not standard.
• adj. (linguistics) Not conforming to the language as used by the majority of its speakers.
• n. Something that is not standard.

bad

• adj. Not good; unfavorable; negative.
• adj. Not suitable or fitting.
• adj. Seemingly non-appropriate, in manners, etc.
• adj. Unhealthy.
• adj. Tricky; stressful; unpleasant.
• adj. Evil; wicked.
• adj. Faulty; not functional.
• adj. (of food) Spoiled, rotten, overripe.
• adj. (of breath) Malodorous, foul.
• adj. (informal) Bold and daring.
• adj. (hip-hop slang) good, superlative.
• adj. (of a need or want) Severe, urgent.
• adv. (now colloquial) Badly.
• n. (slang) Error, mistake.
• n. (countable, uncountable, economics) An item (or kind of item) of merchandise with negative value; an unwanted…
• adj. (slang) Fantastic.
• v. (archaic) Alternative past tense of bid. See bade.
• v. (Britain, dialect, transitive) To shell (a walnut).

deficient

• adj. Lacking something essential; often construed with in.
• adj. Insufficient or inadequate in amount.
• adj. (mathematics) Of a number n, Having the sum of divisors σ(n)<2n, or, equivalently, the sum of proper…

inferior

• adj. of lower quality.
• adj. of lower rank.
• adj. located below.
• adj. (botany) Situated below some other organ; said of a calyx when free from the ovary, and therefore below…
• adj. (botany) On the side of a flower which is next to the bract; anterior.
• adj. (astronomy) Nearer to the Sun than the Earth is.
• adj. (astronomy) Below the horizon.
• n. a person of lower stature to another.

nonnormative

• adj. Not normative.

substandard

• adj. Of inferior quality; not meeting the minimum quality requirements.

unacceptable

• adj. unsatisfactory; not acceptable.
• adj. (linguistics) not conforming to accepted usage.
• n. Something that is not acceptable.

unaccepted

• adj. Not accepted; unacceptable.