Is INSPO a Wordle Word?

Yes. INSPO is a valid Wordle word.

It is not on the Wordle answer list, so it is unlikely to be a daily answer.

What does INSPO mean?

/ˈɪnspoʊ/

The drawing of air into the lungs, accomplished in mammals by elevation of the chest walls and flattening of the diaphragm, as part of the act of respiration.
A breath, a single inhalation.
A supernatural divine influence on the prophets, apostles, or sacred writers, by which they were qualified to communicate moral or religious truth with authority; a supernatural influence which qualifies people to receive and communicate divine truth; also, the truth communicated.

3 more noun definitions

The act of an elevating or stimulating influence upon the intellect, emotions or creativity.“She was waiting for inspiration to write a book.”
A person, object, or situation which quickens or stimulates an influence upon the intellect, emotions or creativity.“The trip was an inspiration to her for writing a book.”
A new idea, especially one which arises suddenly and is clever or creative.

Definition from Wiktionary, available under the CC BY-SA license.

Starter word rating: WeakIn the top 44% of all valid Wordle words for testing common letters.
Vowels: I, O
Unique letters: 5 of 5
Common letters: I, O

Letter ratings use how often each letter appears in Wordle answers.

Tap its tiles to the colours Wordle showed, and the Wordle Solver lists every word that still fits, with the best next guess.