ANT: Impossible, unallowable.

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KEY: Feat, [See ACHIEVEMENT].

=

KEY: Featly, [See FEAT].

SYN: Neatly, cleverly, dexterously, adroitly.

ANT: Clumsily, hardly, bunglingly.

=

KEY: Feature.

SYN: Component, element, characteristic, indication, portion, mark, lineament, sign.