heartfelt
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.”
Typically used attributively before a noun; often pairs with 'apology', 'thanks', 'plea', or 'tribute'.
Usage heartfelt sympathies
“In a post on social media , external which gained thousands of responses from customers past and present, the family shared a "heartfelt thank you".”
“She wouldn’t have slept well if she’d known this book was coming, but it’s an epic achievement and an honest, heartfelt account.”
From heart + felt.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.