Definition of one-sided
1a(1)
: having one side prominent : lopsided
(2)
: having or occurring on one side only
b
: limited to one side : partial
a one-sided interpretation
2
: unilateral
a one-sided decision
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Merriam-Webster unabridged
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Time Traveler for one-sided
The first known use of one-sided was circa 1793
See more words from the same year