13-letter words containing p, e, t, r, b
- tuva republic — a constituent republic of S Russia: mountainous. Capital: Kizyl. Pop: 305 500 (2002). Area: 170 500 sq km (65 800 sq miles)
- umbrella step — (in the game of giant steps) a step executed by extending one foot forward and whirling on the heel.
- unperceptible — capable of being perceived; recognizable; appreciable: a perceptible change in his behavior.
- unperturbable — to disturb or disquiet greatly in mind; agitate.
- 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.
- unpresentable — not fit to be shown or introduced to other people
- unpreventable — not able to be prevented
- unproblematic — not problematic, not causing difficulties or confusion; uncomplicated
- unprotectable — to defend or guard from attack, invasion, loss, annoyance, insult, etc.; cover or shield from injury or danger.
- unrespectable — not able to be respected
- unsupportable — capable of being supported; endurable; maintainable.
- variable type — type that can be varied to fit a page, screen, etc
- zebra stripes — a pattern of alternate black and white stripes