What is the meaning of -ly?

Used to form adjectives from nouns, the adjectives having the sense of "behaving like, or having a nature typical of what is denoted by the noun".

Used to form adjectives from nouns, the adjectives having the sense of "appearing like, resembling, or having the likeness of what is denoted by the noun".

Used to form adjectives from nouns specifying time intervals, the adjectives having the sense of "occurring at such intervals".

Used to form adverbs from adjectives and nouns.

Used to form adjectives from nouns, the adjectives having the sense of "like or characteristic of what is denoted by the noun".

Appended to adjectives in order to render meaning of the adjective either more intense or more approximate.

Used to form adverbs from adjectives, and nouns; the adverbs having the sense of "in the manner of what is denoted by the adjective/noun".

Optionally appended to adverbs without suffixes with no change to the meaning.

Source: wiktionary.org