1. heterogeneous
   consisting of elements not of the same kind or nature
2. hoary
   having gray or white hair as with age
3. homogeneous
   all of the same or similar kind or nature
4. husband
   a male partner in a marriage
5. hyperbole
   extravagant exaggeration
6. iconoclast
   someone who attacks cherished ideas or institutions
7. idiosyncrasy
   a behavioral attribute peculiar to an individual
8. ignoble
   completely lacking nobility in character or purpose
9. imbue
   spread or diffuse through
10. impasse
    a situation in which no progress can be made
11. impecunious
    not having enough money to pay for necessities
12. imperturbable
    marked by extreme calm and composure
13. impervious
    not admitting of passage or capable of being affected
14. impetuous
    characterized by undue haste and lack of thought
15. impious
    lacking piety or reverence for a god
16. implacable
    incapable of being placated
17. imprecation
    the act of calling down a curse that invokes evil
18. impugn
    attack as false or wrong
19. incarnadine
    redden or make flesh-colored
20. inchoate
    only partly in existence; imperfectly formed
21. inculcate
    teach and impress by frequent repetitions or admonitions