looking satisfied; looking very pleased
Set phrase describing someone's visibly content or gratified expression. Often used with the honorific prefix ご as ご満悦の体.
The company president looked very pleased with the sales of the new product.
He nodded with a satisfied look.
Standard kanji spelling for this set phrase.
Alternate kanji spelling using 態; less common but attested.
The phrase combines 満悦 (satisfaction, great pleasure) with の体 (a classical Chinese-derived pattern meaning 'appearance of'). The exact historical derivation is uncertain, but it is a fixed literary expression.