Comprehensive resource for understanding and mastering English idioms
The idiom "walking on air" is a figurative expression that means to be extremely happy or pleased about something. It is often used to describe a feeling of being unstoppable and invincible, as if one is floating or walking without any obstacles.
The origin of the idiom "walking on air" is unclear, but it has been in use since at least the 13th century. One theory suggests that the phrase comes from an old English legend about Saint Dunstan, who was said to have walked on air while hammering away at the devil's foot. Another theory suggests that the phrase comes from medieval paintings of saints and angels walking in the clouds. The idiom has since come to be used more generally to describe any feeling of euphoria or excitement.