If you are ~ for something that someone has given you or done for you, you have warm, friendly feelings towards them and wish to thank them.
She was ~ to him for being so good to her...
I should like to extend my ~ thanks to all the volunteers.
ADJ: usu v-link ADJ, usu ADJ to n, ADJ for n/-ing
~ly
‘That’s kind of you, Sally,’ Claire said ~ly.
ADV: ADV with v