ANT: Thanklessness, ingratitude.

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KEY: Thankless.

SYN: Ungracious, unprofitable, unthankful, profitless, unreciprocal.

ANT: Profitable, reciprocated.

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KEY: Thaw.

SYN: Dissolve, melt, liquefy.

ANT: Freeze, congeal, harden.

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