What is the meaning of Certo?

right, correct

certain

fixed, settled, firm

sure

certainly

certain, sure

reliable

real, true

some, certain

certainly, of course, surely, definitely

to match, vie with, emulate

to fight, wrestle

to contend, compete, race

to struggle, strive

to fight it out

to dispute

to try hard

certainly, surely

with certainty, without doubt

dative/ablative masculine/neuter singular of certus

right; correct (not containing errors)

certain; sure (without doubt)

precise; accurate

morally right; just

inevitable (impossible to avoid or prevent)

correctly

surely

certain (determined but unspecified)

OK, all right

Source: wiktionary.org