pewną

feminine accusative/instrumental singular of pewny

Yeni

sure, certain (sure in one's mind, positive; absolutely confident in the truth of something)
sure, certain (sure to happen, inevitable; assured)
sure, certain; trustworthy (such that there is no doubt as to one's honesty, reliability, or dependability)
sure, certain (evidencing someone's certainty)
sure, certain; safe (not in danger and without worries)
certain, sure; solid, hard, stable; tough
certain, sure; indisputable; unambiguous
valid, in force
right, proper; efficient; in good condition
significant (having a noticeable or major effect)
certain; Further details are uncertain.
The meaning of this term is uncertain.