/ ˈblɪsfl; NAmE / adjective
extremely happy; showing happiness :
We spent three blissful weeks away from work.
a blissful smile
We preferred to remain in blissful ignorance of (= not to know) what was going on.
➡ note at happy
► bliss·ful·ly / -fəli; NAmE / adverb :
blissfully happy
blissfully ignorant / unaware