Adjektive
active {feelings & emotions}, [ more active ; most active ]
vigorous [ more vigorous ; most vigorous ]
robust [ more robust ; most robust]
energetic {feelings & emotions}, [ more energetic ; most energetic ]
spirited {feelings & emotions}
fresh [ fresher ; freshest ]
proud [ prouder ; proudest]
busy [ busier ; busiest]
spry [ sprier ; spriest ]
indefatigable [ more indefatigable ; most indefatigable ]
athletic [ more athletic ; most athletic]
zippy [ zippier ; zippiest ]
agile [ agiler/more agile ; agilest/most agile ]
strenuous [ more strenuous ; most strenuous]
vigoroso [ more vigoroso ; most vigoroso ]
spriest [ sprier ; spriest ]
sprier [ sprier ; spriest ]
cute [ cuter ; cutest ]
vivid [ more vivid ; most vivid ]
...
Noun
supporter [pl. supporters]
activist [pl. activists]