adjective
BAD : She said she liked the jumper because the colour was very peculiar.
GOOD : She said she liked the jumper because the colour was very unusual.
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peculiar = strange, especially in a surprising or unpleasant way: 'I'm not sure about this cheese. The taste is a bit peculiar.' 'Just because I don't like computers, everyone thinks I'm a bit peculiar.'
unusual = uncommon or rare: 'Where did you buy this cheese? The taste is very unusual.' 'At one time it was unusual for women to enter politics.'