| Term | Definition |
| acrophobia | abnormal fear of being in high places |
| agoraphobia | abnormal fear of being in crowds, public places, or open areas |
| audiophile | one especially interested in high-fidelity sound reproduction |
| balletomania | extreme enthusiasm for the ballet |
| bibliomania | craze for acquiring books, especially rare ones |
| bibliophile | person who loves or collects books |
| bibliophobe | person with hatred, fear, or mistrust of books |
| claustrophobia | dread of being in closed narrow spaces |
| dipsomaniac | person with an uncontrollable craving for alcoholic beverages |
| hemophilliac | person who has a tendency to bleed excessively from minor injuries, bleeder |
| kleptomaniac | one who has persistant neurotic impulse to steal, though not in need |
| mania | exaggerated entusiasm; craze; mad impulse |
| megalomania | mental disorder characterized by fantasies of grandeur, power, wealth, etc. |
| monomania | derangement of the mind on one subject only |
| phobia | abnormal and persistent fear, dislike, hatred |
| photophillic | light-loving; requiring abundant light |
| photophobia | painful sensitivity to light |
| photophobic | shunning light; light-hating |
| pyromaniac | person having an insane impulse to start fires |
| xenophobia | unreasonable fear or hatred of foreigners or strangers |