13-letter words containing u, p, b, r, i, n
- unperceptible — capable of being perceived; recognizable; appreciable: a perceptible change in his behavior.
- unpermissible — that can be permitted; allowable: a permissible amount of sentimentality under the circumstances; Such behavior is not permissible!
- unpolarizable — not capable of being polarized
- unpracticable — impracticable.
- unpredictable — not predictable; not to be foreseen or foretold: an unpredictable occurrence.
- unpredictably — not predictable; not to be foreseen or foretold: an unpredictable occurrence.
- unproblematic — not problematic, not causing difficulties or confusion; uncomplicated
- unreprievable — not able to be reprieved, eased, or postponed
- unresponsible — answerable or accountable, as for something within one's power, control, or management (often followed by to or for): He is responsible to the president for his decisions.