Present: rengs ND. reng DK, TC. Past: rengs [ND], DK, TC. Future: reng DK, TC. Imperative: rengs DK. - TC. Involuntary: TC. Intransitive: TC. Meaning: To become rigid, stiff, to become hard, become untamable DK. 1. To become solid, stiff. 2. To freeze solid TC.