-ily
- forming adverbs corresponding to adjectives ending in -y
Wiktionary
suffix
Etymology: Combination of -y (“adjectival suffix”) + -ly (“adverbial suffix”), with -y changed to -i-.
- Forms adverbs from nouns and verbs whose derived adjectives are suffixed with -y.
“greed → greedy → greedily”
“noise → noisy → noisily”