Grade 9.
- impressionable
- impressiveness
- impromptu
- improvisations
- impudence
- inadequacy
- inattentiveness
- incensed
- incidence
- incomprehension
- inconsiderately
- inconsiderateness
- inconsistencies
- inconvenienced
- inconveniencing
- inconveniently
- incredibilities
- incur
- indecisiveness
- indicative