cosily

Cosily is an adverb derived from the adjective cosy (British English) or cozy (American English), used to describe actions or settings performed in a way that evokes coziness and comfort. It can modify verbs, adjectives, or nouns, conveying warmth, shelter, and a pleasant domestic atmosphere. For example: "They sat cosily by the fire" or "The room was cosily furnished."

The adjective cosy originated in English and is related to notions of comfort and snugness; the adverb cosily is formed by adding -ly. Spelling varies by variety: cosily (British), cozily (American; also widely used internationally), with both spellings accepted in modern English dictionaries.

Cosily is commonly used to describe places, garments, or behaviors that contribute to a sense of warmth and contentment; it is less common in American prose, where cozily is preferred, but cosily remains standard in British usage and in many Commonwealth varieties. Examples include: "The cafe was cosily lit" and "They settled cosily beneath a blanket."

Related terms include cosy, cozy, cosiness, and coziness.