<p><strong>Adjective</strong></p><ul><li>coming or occurring each night: his nightly walk to the newsstand</li><li>coming, occurring, appearing, or active at night: nightly revels</li><li>of, relating to, or characteristic of night: the nightly gloom before a storm</li></ul><p><strong>Adverb</strong></p><ul><li>on every night: performances given nightly</li><li>at or by night: an animal that is seen nightly</li></ul>