friendly
unfriendly
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unsurprising
possible
impossible
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dishonest
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illegal
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uninteresting
kind
unkind
safe
unsafe
correct
incorrect
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unbelievable
tidy
untidy
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unhealthy
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unusual
likely
unlikely
polite
impolite
responsible
irresponsible
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unsatisfied
dependent
independent
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unreal
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uncomfortable
patient
impatient
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unfair
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illegible
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invisible