灯|ひhi[1]atamadaka (head-high)

1. nounlight; lamp
   窓まどに灯ひがともっていた。↗

   There was a light burning in the window.

• Synonym灯火とうかWrittenWritten/formal prose word for lamplight or lights, as in 「灯火管制」. The headword 「灯」 read 「ひ」 itself carries an elegant, literary flavor.
• Antonym闇やみNeutralNeutral word standing opposite 「灯」 in light and dark: darkness, also metaphorically a bleak future or something kept out of the light.
• Antonym暗あんWrittenWritten/formal prose; mostly appears as a word element, as in 「暗室」 or 「明暗」. Rarely used alone — say darkness with 「闇」.

「灯」 is the elegant, literary word for lights; in written prose prefer 「灯火」, and in everyday speech say 「明かり」 or 「電気」. The antonym for darkness is 「闇」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 【トウ】ともしび。明あかり。