English

leally

From leal + -ly.

Formed from leal + -ly

Proto-Italic *lēks ‘law’

Latin lex ‘the legal machinery of a state, the law’

Latin lēgālis ‘legal’

Anglo-Norman leal

Middle English leel

English leal

Today it means

adv Loyally.

Language periods are conventional ranges, not dates for this word.