1. (noun)onslaught a sudden and severe onset of trouble Synonyms: onrush, outpouring, bombardment, attack, onset, barrage
2. (noun)attack, onslaught, onset, onrush (military) an offensive against an enemy (using weapons) Synonyms: attempt, approach, attack, oncoming, onrush, bombardment, plan of attack, fire, blast, flak, onset, onslaught, tone-beginning, flack, outpouring, barrage
3. (noun)barrage, bombardment, outpouring, onslaught the rapid and continuous delivery of linguistic communication (spoken or written) Synonyms: battery, onrush, overflow, spring, fountain, onset, shelling, bombardment, discharge, gush, onslaught, flood, run, attack, barrage, bombing, natural spring, barrage fire, outpouring, flush, outflow
Synonyms, Thesaurus & Antonyms of 'onslaught'
English Synonyms and Antonyms
1. onslaught An attack may be by word; an aggression is always by deed. An assault may be upon the person, an aggression is upon rights, possessions, etc. An invasion of a nation's territories is an act Synonyms: attack, aggression, incursion, invasion, onslaught, assault, infringement, onset, trespass, encroachment, intrusion Antonyms: defense, repulsion, resistance, retreat, submission, surrender
Synonyms for onslaught 
