You and I occupying home most recently built? (6)
I believe the answer is:
newest
'most recently built?' is the definition.
The answer and definition are different parts of speech. However, adjectives and past participle verbs occasionally define each other.
'you and i occupying home' is the wordplay.
'you and i' becomes 'we' (we means you and I).
'occupying' indicates putting letters inside (inserted letters occupy or enter the word).
'home' becomes 'nest' (a bird's home).
'we' going within 'nest' is 'NEWEST'.
Can you help me to learn more?
(Other definitions for newest that I've seen before include "Superlatively modern" , "Most recent or most fashionable" , "Most pristine or latest" , "Freshest, most modern" , "Freshest, most recent" .)