firm in Polish
firm in Polish
jędrny
Steadfast, secure, solid (in position)
twardy
Durable, rigid (material state).
firma
(UK, business) A business partnership; the name under which it trades.
ujędniać
(transitive) To make firm or strong; fix securely.
umacniać się
(intransitive) To become firm; stabilise.
umocnić się
(intransitive) To become firm; stabilise.