nightly

• IPA^(key): /ˈnaɪtli/
• Homophone: knightly

From Middle English nyȝtly, nihtlich, nihtlic, from Old English nihtlīċ, nihtelīċ (“nocturnal, nightly, of the night, at night”), equivalent to night +‎ -ly. Cognate with Scots nichtlie (“nightly”), West Frisian nachtlik (“nightly, nocturnal”), Dutch nachtelijk (“nightly, nocturnal”), German nächtlich (“nocturnal, nightly”), Danish natlig (“nightly”), Swedish nattlig (“nightly, nocturnal”).

nightly (not comparable)

1. Happening or appearing in the night; night-time; nocturnal.

   nightly dews

   A cobweb spread above a blossom Is sufficient to protect It from nightly chill. — Tyndall.

2. Performing, occurring, or taking place every night.

   The dog demanded to go out for his nightly walk.

3. Used in the night.

From Middle English nyghtly, neghtly, from Old English *nihtlīċe (“nightly”), equivalent to night +‎ -ly.

nightly (not comparable)

1. Every night.

   He checks his email nightly.

nightly (plural nightlies)

1. (computing) A build of a software program with the latest changes, released every night.

• thingly