onslaught

n ~ (on sb/sth) fierce attack 猛攻: They survived an onslaught by tribesmen. 他们承受住了部落人发起的一次猛攻. * (fig 比喻) an onslaught on government housing policies 对政府住房政策的猛烈抨击.

one-to-one, one-track mind, one-upmanship, one-way, onerous, oneself, ongoing, onion, online, onlooker, only, only that, only too, ono, onomatopoeia, onomatopoeic, onrush, onset, onshore, onside, onto, onto (also on to), ontological, ontology, onus, onward, onward(s), onyx, oodles, oomph, ooze, op, op (also Op), op art, op-ed, opacity, opague, opal, opalescence, opalescent,