roar back

== English == === Verb === roar back (third-person singular simple present roars back, present participle roaring back, simple past and past participle roared back) (intransitive, idiomatic) To suddenly become active, powerful or functional after a period of decline. Synonyms: come roaring back, roar to life === Further reading === “roar back” in Longman Dictionary of Contemporary English, Longman.