full-blown(having attained the most fully developed or extreme form: full-blown tuberculosis • a full-blown panic attack • Aspirin reduces your chances of having a full-blown stroke. • The extremes range from occasional partial seizures of simple symptomatology without loss of consciousness to full-blown tonie-clonic seizures. • But doctors predicted that her chance of developing full-blown diabetes in the next five years was at least 1 in 4.)