| Word root/ prefix | Root Meaning | Words based on the Root |
| Funct | perform, work | Defunct - No longer working or alive. Function - To work or perform a role normally. Malfunction - To fail to work correctly. |
| Hept/a | seven | Heptagon - A shape with seven angles and seven sides. Heptarchy - A government by seven persons; also, a country under seven rulers. Heptameter - A line of verse consisting of seven metrical feet. Heptathlon - Sporting contest involving seven different events. |
| Port | carry | Export - To carry goods out of a place to another. Portable - Able to be carried. Porter - A person who carries luggage. |
| Semi | half, partial | Semiannual - Every half year. Semicircle - Half a circle. Semiconscious - Partly conscious. Semiannual - Every half of a year. |
| Somn/i | Sleep | Insomnia - Inability to fall asleep. Somniloquy - Talking in your sleep. Somnolent - Feeling sleepy. |