blissful

adjective

Filled with deep joy, or bringing a feeling of perfect happiness.

Example sentence

“They spent a blissful week doing nothing but swimming and relaxing.”

"Blissfully unaware" and "blissful ignorance" are the set phrases, both with an ironic edge: the happiness comes from not knowing.

Related words

jubilantFeeling or showing great joy, especially over a success.elatedFilled with great joy and excitement; thrilled.merryCheerful, lively, and full of fun.ecstaticFeeling overwhelming happiness or joyful excitement.gleefulFull of open, excited delight, often at a victory or someone else's misfortune.gratitudeA feeling of thankfulness toward someone for their kindness or help.