| heterogeneous | Consisting of parts or elements that are different from each other; diverse in character or content | |
| heyday | The period of a person's or thing's greatest success, popularity, or vigor | |
| hidebound | unwilling or unable to change because of tradition or convention | |
| hirsute | hairy; shaggy | |
| hodgepodge | A confused mixture or jumble of different things | |
| holistic | Characterized by comprehension of the parts of something as intimately interconnected and understandable only by reference to the whole | |
| homespun | Simple and unsophisticated, typically because of originating in the countryside | |
| hubris | Excessive pride or self-confidence | |
| humbuggery | Deceptive or false talk or behavior | |
| humdrum | lacking excitement or variety; boringly monotonous | |