(adj.) wandering through or amongst the clouds; moving through air; from the Latin nubes (“cloud”) and vagant (“wandering”), c. 1656.
I wandered lonely as a cloud
That floats on high o’er vales and hills,
When all at once I saw a crowd,
A host, of golden daffodils;
Beside the lake, beneath the trees,
Fluttering and dancing in the breeze.