Yes, yearned is a word. "I yearned for the day when I could see the sunlight from my prison cell."
yearned
desired
yearned
yearned
midyear, yearend, yearned, yearner
The word yearn is a regular verb. The past tense is yearned.
yearned
Her skin remembered his touch, and yearned to feel it again.
Yearned is the past tense and past participle of yearn.
ache, ambition, appetite, aspiration
He yearned to be the Prime Minister someday.
A sentence for yearn: I yearn to eat the chocolate bar sitting on the top shelf, but I cannot reach it.