- imperfect
- impolite
- impatient
- improper
- inactive
- inconvenient
- incorrect
- inconsiderate
- preview
- prejudice
- prevent
- prefix
- prehistoric
- unable
- uncertain
- uncomfortable
- unaware
- ungrateful
- disheveled: adjective: untidy; rumpled. After my brother and I finished a bedtime pillow fight, both of our beds were disheveled.
- pandemonium: noun: a wild uproaar. There was pandemonium to the stadium when the home team won the championship game.
- terminate: verb: to bring to an end. We had to terminate our bike ride when it began to rain heavily.
- pungent: adjective: sharp or strong to the senses of taste or smell. The pungent odor of fish could be smelled from one end of the wharf to the other.