Kindly can be an adverb or an adjective.
If you do something kindly, you do it in a kind way.
You can use kindly to show that you are grateful to someone.
Some people use kindly when they are asking someone to do something in an annoyed way. This is a rather old-fashioned use.
If you do not take kindly to something, you are very unwilling to accept it.
Kindly is sometimes an adjective with the same meaning as 'kind'. This is a rather old-fashioned use.
| Adj. | 1. | kindly - showing or motivated by sympathy and understanding and generosity; "was charitable in his opinions of others"; "kindly criticism"; "a kindly act"; "sympathetic words"; "a large-hearted mentor" kind - having or showing a tender and considerate and helpful nature; used especially of persons and their behavior; "kind to sick patients"; "a kind master"; "kind words showing understanding and sympathy"; "thanked her for her kind letter" |
| 2. | kindly - pleasant and agreeable; "a kindly climate"; "kindly breeze" | |
| Adv. | 1. | kindly - in a kind manner or out of kindness; "He spoke kindly to the boy"; "she kindly overlooked the mistake" unkindly - in an unkind manner or with unkindness; "The teacher treats the children unkindly" |