active strength or force.

healthy physical or mental energy or power; vitality.

energetic activity; energy; intensity

The economic recovery has given the country a new vigor.

force of healthy growth in any living matter or organism, as a plant.

active or effective force, esp. legal validity.

noun

enervation , idleness , inactivity , lethargy , weakness

noun

ability , action , activity , agility , alertness , bang * , birr , bounce , capability , capacity , dash , drive , dynamism , endurance , enterprise , exercise , fire , force , get-up-and-go , go * , hardiness , healthiness , intensity , juice * , kick * , liveliness , lustiness , might , motion , moxie * , muscle * , nimbleness , pep * , pith , potency , puissance , punch * , push , quickness , snap * , sock , soundness , starch * , steam * , strength , tuck * , urgency , vehemence , vim , vitality , well-being , zing * , zip * , animation , brio , lan , esprit , life , pertness , sparkle , verve , vivaciousness , vivacity , zip , punch , starch , vigorousness , ardor , bang , energy , enthusiasm , flair , getup , growth , gusto , hardihood , health , impetuosity , invigorate , moxie , muscle , oomph , panache , passion , pep , power , spirit , stamina , steam , tonicity , virility , zeal , zest , zing