KEY: Shut.
SYN: Close, contract, confine, preclude, bar, fasten.
ANT: Open, expand, unclose, unbar, unfasten.
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KEY: Shy.
SYN: Timid, reserved, modest, bashful, Suspicion, shrinking, chary.
ANT: Bold, brazen-faced, impudent, audacious, reckless.
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KEY: Sibilation.
SYN: Hissing, outcry, disfavor.