ANT: Shorten, abbreviate, curtail, contract, reduce.
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KEY: Protrude.
SYN: Extend, project, abut, jut, demonstrate, expose, bulge, thrust forward.
ANT: Recede, retract, adduce, repress, suppress, conceal.
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KEY: Protrusion.
SYN: Projection, protuberance, convexity, tongue.
ANT: recess, cavity, hollow, concavity, mouth.
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