- an onset, assault, or attack, especially a vigorous one.
Origin of onslaught
Examples from the Web for onslaught
Nearby, Loescher added, parking lots are a great place to see the onslaught.The Fiery Underground Oil Pit Eating L.A.
December 6, 2014
And the onslaught of the elements has helped raise tensions to the point where a new explosion is expected any day.Ukraine Could Explode in the Next 48 Hours
November 10, 2014
Now Tehran is making mass arrests to try to stop the onslaught.Iran Says It’s Under Attack by ISIS
Jassem Al Salami
October 9, 2014
She said the weapons were meant for ISIS troops involved in the onslaught on Rojava.The Turks to ISIS: ‘Let’s Make a Deal’
September 21, 2014
More than a dozen times he rescued the U.S. from the Belgian onslaught, improbably blocking shot after shot.Team USA Lost, but Tim Howard Is a Winner
July 1, 2014
And the surprise of his onslaught proved an ally of unguessed potency.
Kirkwood turned to meet her onslaught with a mien grave, determined, unflinching.
And so forty-eight hours were left one to prepare for the onslaught.The Three Cities Trilogy, Complete
If so, he could easily have risked some 20,000 in the first onslaught.Diary from November 12, 1862, to October 18, 1863
General Foch not only checked the German onslaught, but drove it back.
- a violent attack
Word Origin and History for onslaught
1620s, anslaight, somehow from or on analogy of Dutch aanslag "attack," from Middle Dutch aenslach, from aen "on" (see on) + slach "blow," related to slaen "slay." Spelling influenced by obsolete (since c.1400) English slaught (n.) "slaughter," from Old English sleaht (see slaughter (n.)). No record of its use in 18c.; apparently revived by Scott.