cosy

Concise Oxford English Dictionary © 2008 Oxford University Press:
cosy /ˈkəʊzi/ (US cozy)

▶adjective (cosier, cosiest)

• 1 comfortable, warm, and secure.

• 2 not seeking or offering challenge or difficulty.

  ■ informal, derogatory (of a transaction or arrangement) beneficial to all those involved and possibly somewhat unscrupulous.

▶noun (pl. cosies)

• 1 a cover to keep a teapot or a boiled egg hot.

• 2 Brit. a canopied corner seat for two.

▶verb (cosies, cosying, cosied) informal make (someone) feel cosy.

■ (cosy up to) snuggle up to or ingratiate oneself with.

– derivatives
cosily adverb,
cosiness noun.

– origin C18 (orig. Scots): of unknown origin.