A full-blown gunfight.

Full-blown schizophrenia.

He's got full-blown smallpox.

That's a full-blown corn.

He's having full-blown hallucinations.

Paranoia, delusions, possibly even full-blown hallucinations.

My son had a full-blown attack.

Gonna be full-blown HNG now.

If it's not a full-blown affair,

How couldst a rainbow be full blown?