hush / həsh/ • v. [tr.] make (someone) be quiet or stop talking: he placed a finger before pursed lips to hush her. ∎ [intr.] be quiet: Hush! Someone will hear you. ∎ (hush something up) suppress public mention of something: management took steps to hush up the dangers.• n. [in sing.] a silence: a hush descended over the crowd.