WordofTheDay.US

carefully

/ˈkɛːf(ə)li/ adverb

In Latin: curiose, caute Wiktionary

Origin

From Middle English carfulli, carefulliche, from Old English carfullīċe, ċearfullīċe (“carefully, diligently”), equivalent to careful + -ly.

From Wiktionary, via Kaikki.org (CC BY-SA)