nightly C2+ Topic:Describing Qualities US /ˈnaɪtli/ UK /ˈnaɪtli/ See IPA manual Homophones knightly /ˈnaɪtli/ Meanings 1 adv happening or done every night He made a nightly habit of reading before sleep. Thesaurus Synonyms 1 adv · happening or done every night nocturnalevery night ↔ Opposites dailydiurnal Word family Related forms nightnightfallnighttime Etymology AI details From Old English nihtlīc ('of the night'), from niht ('night') + -līc ('-ly'). nihtlīc Old English niht Old English View etymology graph -> Topics Describing Qualities Word Formation & Derivatives External links Google Images Cambridge Dictionary Wiktionary # nightly **Type:** Word **Level:** C2+ **Part of speech:** adv **IPA (US):** /ˈnaɪtli/ **IPA (UK):** /ˈnaɪtli/ ## Meanings 1. happening or done every night ## Examples - He made a nightly habit of reading before sleep. ## Synonyms - nocturnal - every night ## Antonyms - daily - diurnal ## Related Forms - night - nightfall - nighttime ## Roots and Affixes - Root: nihtlīc - Root: niht ## Etymology From Old English nihtlīc ('of the night'), from niht ('night') + -līc ('-ly'). ## AI Etymology Nightly comes from Old English nihtlīc ('of the night'), from niht ('night') + -līc ('-ly'). The etymological trail includes Old English nihtlīc, Old English niht. The same word family includes night, nightfall, nighttime. Its current adverb use means "happening or done every night". ## Topics - Describing Qualities - Word Formation & Derivatives markdown