"toward the front or a point ahead, forward; forward in time," late 14c., from on + -ward. The form onwards, with adverbial genitive -s, is attested from c. 1600. As an adjective, "moving on or forward," 1670s.
from the sixth century onward
moved onward into the forest
onto-
ontogeny
ontological
ontology
onus
onward
onwards
onymous
onyx
oo-
oocyst
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