heartfelt
adj.adj. showing strong, honest, and sincere feelings. You use this to describe things like thanks, apologies, or speeches that come from the heart.
adj. sincere and deeply felt; expressing genuine emotion without pretense. Often used to describe communicative acts such as apologies, tributes, or expressions of gratitude.
She gave a heartfelt speech at the wedding.
The charity received a heartfelt letter of thanks from a family they had helped during the winter.
The actor’s heartfelt performance resonated with audiences, as he managed to convey a sense of profound loss without relying on overly dramatic gestures or dialogue.
From heart + felt.
Typically used attributively before a noun; often pairs with 'apology', 'thanks', 'plea', or 'tribute'.