To speak honestly and sincerely.
Говорить честно и искренне. (govorit' chestno i iskrenne)
"When he apologized, he really spoke from the heart."
"Когда он извинился, он действительно говорил от всего сердца." (kogda on izviniłsa, on deystvitel'no govorio ot vsego serdtsa)
to manage even when something is missing
To make a sincere promise.
A widely accepted truth or belief.
something that seems promising at first but fails to deliver
A strong desire to learn new things.
a casual way of asking how someone is doing