"a rapid or violent onset," 1831; see on + rush (n.).
from the bow she stared at the mesmerising onrush of the sea where it split and foamed
the explosion interrupted the wild onrush of her thoughts
onomastics
onomatology
onomatopoeia
onomatopoeic
Onondaga
onrush
onset
on-site
onslaught
Ontario
ontic
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