heartfelt
US /ˈhɑːrt.felt/
UK /ˈhɑːrt.felt/

1.
sincère, profond
deeply and sincerely felt or expressed
:
•
She offered her heartfelt condolences to the grieving family.
Elle a offert ses condoléances sincères à la famille en deuil.
•
His speech was a heartfelt plea for peace.
Son discours était un appel sincère à la paix.