From The Collaborative International Dictionary of English v.0.48 [gcide]: Onwards \On"wards\, adv. [See -wards.] Onward. [1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
onwards
adv 1: in a forward direction; "go ahead"; "the train moved
ahead slowly"; "the boat lurched ahead"; "moved onward
into the forest"; "they went slowly forward in the mud"
[syn: ahead, onward, onwards, forward,
forwards, forrader]