Definition of nighly in English:

nighly

adverb

United States Regional
rare
  • Almost, nearly.

Origin

Old English; earliest use found in King Alfred (c848–899), king of the West Saxons and of the Anglo-Saxons. Cognate with or formed similarly to Middle Dutch nālīke, nālijc, nālic, Old High German nāhlīhho (Middle High German nāchlīche, naehelīche), Old Icelandic náliga (Icelandic nálega) from the Germanic base of nigh + the Germanic base of -ly.

Pronunciation

nighly

/ˈnʌɪli/