Meaning of -LY in English
suffix forming adjectives esp. from nouns, meaning:
1. having the qualities of (princely; manly).
2 recurring at intervals of (daily; hourly).
Etymology: from or after OE - lic f. Gmc, rel. to LIKE(1) 2.
suffix forming adverbs from adjectives, denoting esp. manner or degree (boldly; happily; miserably; deservedly; amusingly).
Etymology: from or after OE -lice f. Gmc (as -LY(1))
Oxford English vocab. Оксфордский английский словарь. 2012