ANT: Advancement, progression, aggression, procession.
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KEY: Regret \v.\
SYN: Grieve, lament, repent, miss, desiderate, deplore.
ANT: Welcome, hail, approve, abandon, abjure, forget, disregard.
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KEY: Regret \n.\
SYN: Sorrow, grief, concern, remorse, lamentation, repentance, [See GRIEF].
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KEY: Regular.