12-letter words containing c, o, p, i, u
- top security — ultra secure
- touch-typing — the act of typing without having to look at the keys of the typewriter or computer keyboard
- transpicuous — transparent.
- tricephalous — with three heads
- trouser clip — a clip that is worn around the bottom of a trouser leg to stop the material getting caught in the chain of a bicycle
- unapologetic — containing an apology or excuse for a fault, failure, insult, injury, etc.: An apologetic letter to his creditors explained the delay.
- unauspicious — inauspicious; unfavourable; unlucky
- uncompassion — a feeling of deep sympathy and sorrow for another who is stricken by misfortune, accompanied by a strong desire to alleviate the suffering.
- uncompelling — tending to compel, as to force or push toward a course of action; overpowering: There were compelling reasons for their divorce.
- uncomplicate — to make complex, intricate, involved, or difficult: His recovery from the operation was complicated by an allergic reaction.
- undiplomatic — of, relating to, or engaged in diplomacy: diplomatic officials.
- unimportance — a lack of importance
- unit process — any of a number of standard operations, such as filtration or distillation, that are widely used in various chemical and process industries
- unoptimistic — disposed to take a favorable view of events or conditions and to expect the most favorable outcome.
- unperfection — imperfection
- unpoetically — in an unpoetic manner
- unproclaimed — to announce or declare in an official or formal manner: to proclaim war.
- unproductive — having the power of producing; generative; creative: a productive effort.
- unprotective — having the quality or function of protecting: a protective covering.
- unreciprocal — given or felt by each toward the other; mutual: reciprocal respect.
- unsuspicious — not feeling suspicion
- variocoupler — a transformer having coils with a self-impedance that is essentially constant but a mutual impedance that can be varied by moving one coil with respect to the other.
- viscountship — the position of being a viscount
- word picture — a description in words, especially one that is unusually vivid: She drew a word picture of a South Pacific sunset.