For modern usage, use blessed (pronounced like "blest"). The word blest is not incorrect, it's just an archaic form. From grammarist.com: Blessed is the past tense and past participle of bless.
Is it OK to say blessed?
I get that when people say #blessed, it's generally meant as an expression of gratitude. But the word “blessed” has its own meaning, rooted in religion. It implies something bigger than gratitude. Dictionary.com defines “blessed” as “divinely or supremely favored; fortunate.”
How do you use the word blessed?
Blessed sentence example
- God has truly blessed us. ...
- The country to the east and south-east of the Aravallis affords a striking contrast to the sandy plains on the north-west of the range, and is blessed with fertile lands, hill-ranges and long stretches of forest, where fuel and fodder are abundant.