dimly-lit

The compound adjective 'dimly-lit' is a modern English formation that transparently combines two native elements. The first element, 'dimly', descends from the Old English adjective dim, which itself has Proto-Germanic origins, likely conveying a sense of obscurity or faintness. The second element, 'lit', originates from the Old English verb for illuminating, līhtan, which is derived from the noun for light, lēoht, tracing back to the Proto-Indo-European root leuk- meaning "light, brightness". The compound's logic is straightforward: it literally describes something that has been illuminated ('lit') in a faint or obscure ('dimly') manner, directly conveying its modern meaning of poor illumination.

Structure: dimly (in a dim manner) + lit (past participle of 'light') - dimly: From the adjective 'dim' (Old English dim, dimm meaning "dark, gloomy, faint") + the adverbial suffix '-ly' (Old English -līce). In this compound, it functions as an adverb modifying the participle 'lit'. - lit: The past participle of the verb 'light' (Old English līhtan, lēohtan meaning "to illuminate, to give light"), here used adjectivally to describe the state of illumination.