SYN: Resistance, stubbornness, renitency.
ANT: Yielding, giving, resilience.
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KEY: Countervail.
SYN: Counteract, of, pose, withstand.
ANT: Aggravate, intensify, subserve.
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KEY: Countless \a.\
SYN: Innumerable, numberless, unnumbered.
ANT: Few, scant, sparse.