| gū | lone/lonely |
| 孤 | lone lonely |
| 孤傲 | proud and aloof |
| 孤僻 | antisocial reclusive eccentric |
| 孤儿 | orphan |
| 孤儿寡妇 | widow and her child |
| 孤儿寡母 | orphan and widow |
| 孤儿药 | orphan drug |
| 孤儿院 | orphanage child asylum |
| 孤军 | isolated force |
| 孤军作战 | fight a lone battle |
| 孤军奋战 | fight a lone battle |
| 孤军深入 | an isolated force penetrating deep into enemy territory; penetrat deep in isolation |
| 孤单 | lone lonely loneliness |
| 孤单的 | lone; lonely; solitary; lorn |
| 孤哀子 | son bereaved of both parents |
| 孤城 | A city whose surroundings all have fallen into enemy hands and is isolated and without help. |
| 孤女 | girl orphan |
| 孤孀 | widow |
| 孤子 | a male bereaved of his father |
| 孤孑 | lonesome solitary |