Meaning

adverb in a dry laconic manner; he said dryly

originEtymology tree English dry Proto-Indo-European *leyg-der. Proto-Germanic *līkąder. Proto-Germanic *-līkaz Proto-Germanic *-ê Proto-Germanic *-līkê Proto-West Germanic *-līkē Old English -līċe Middle English -ly English -ly English dryly From dry + -ly.

Etymology from Wiktionary, CC BY-SA 3.0