IPA: /ˈfrɛndli/
KK: /ˈfrɛndli/
In a way that shows kindness and friendliness; warmly and kindly.
She greeted everyone friendlily at the party, making them feel welcome.
Friendlily → It is formed from "friend" (from Old English "freond", meaning a person attached to another by feelings of affection or personal regard) and "-ly" (meaning in a manner of). The word "friendlily" means in a manner that is characteristic of a friend or friendly behavior.
Think of a 'friend' who acts 'in a manner of' friendship — that's what 'friendlily' means.