vigour

[1]	vitality , energy , vigor , resilience , strength , zip , power , energy , forcefulness , force , stamina , endurance , mettle , mettlesomeness , pith , dynamism , spirit , liveliness , animation , verve , vivacity , exuberance , brio , briskness , zest , zealousness , enthusiasm , gusto , eagerness , (Colloq) spunk , pep , pizazz , vim , oomph , zing , get-up-and-go
[2]	vigor , dynamism , heartiness
[3]	energy , muscularity , vigor , vim