Bliss out means to become very happy, content and relaxed, or to make someone else feel this way.
bliss (noun) – complete happiness
Bliss out is a fairly new phrasal verb and it is usually used more by young people.
Examples of use:
1. They blissed out on the beach all day.
2. They blissed out in the sun, by the pool.
infinitive – bliss out
present simple – bliss out and blisses out
-ing form – blissing out
past simple – blissed out
past participle – blissed out
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