Insatiable  

Adjective | in-sey-shuh-buhl
can’t be satisfied

Innovative  

Adjective | in-uh-vey-tiv
novel or new (especially. as an idea or invention)

Indulge  

Verb | in-duhlj
to give into; to satisfy or gratify

Indifference  

Noun | in-dif-er-uhns
lack of interest or concern

Incite  

Verb | in-sahyt
to encourage or stir up

Imprudent  

Adjective | im-prood-nt
not showing care for the consequences of an action; rash

Imposition  

Noun | im-puh-zish-uhn
an unnecessary burden

Imposing  

Adjective | im-poh-zing
impressive (especially in size or appearance)