I am able, I can (verb)
possum, posse, potuī
eleven
ūndecim
twelve
duodecim
thirteen
tredecim
fourteen
quattordecim
fifteen
quīndecim
sixteen
sēdecim
seventeen
septendecim
eighteen
duodēvīgintī
nineteen
ūndēvīgintī
twenty
vīgintī
in vain (adverb)
frustrā