unnatural
[adjective]
Synonyms:
- strange, extraordinary, freakish, outlandish, queer
- abnormal, anomalous, irregular, odd, perverse, perverted, unusual
- false, affected, artificial, feigned, forced, insincere, phoney or phony (informal), stiff, stilted

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Antonyms: natural

[TahlilGaran] English Synonym Dictionary ▲

un‧nat‧u‧ral /ʌnˈnætʃərəl/ adjective
[Word Family: noun: nature, naturalist, naturalism, naturalization, naturalness, the supernatural, natural, naturist, naturism; adverb: naturally ≠ unnaturally, naturalistically, supernaturally; adjective: natural ≠ unnatural, supernatural, naturalistic; verb: naturalize]

1. different from what you would normally expect:
It was very cold, which seemed unnatural for late spring.

2. seeming false, or not real or natural Synonym : fake:
Julia’s laugh seemed forced and unnatural.

3. different from normal human behaviour in a way that seems morally wrong:
unnatural sexual practices

4. different from anything produced by nature Synonym : artificial, fake:
Her hair was an unnatural orange.
—unnaturally adverb

[TahlilGaran] Dictionary of Contemporary English ▲

unnatural
adj.
VERBS be, feel, look, seem, sound | consider sth, regard sth as
ADV. highly, terribly, very food produced under highly unnatural conditions
quite | almost | a bit, rather

[TahlilGaran] Collocations Dictionary ▲