| adjective | stubbornly unyielding; ; ; ; - T.S.Eliot “dogged persistence” |
| adjective | harshly uninviting or formidable in manner or appearance; ; ; ; - J.M.Barrie “a dour, self-sacrificing life” |
| adjective | showing a brooding ill humor; ; ; ; ; ; - Bruce Bliven “a dark scowl” |
| doggedness | noun | persistent determination |
| persistence | noun | persistent determination |
| pertinacity | noun | persistent determination |
| tenaciousness | noun | persistent determination |
| tenacity | noun | persistent determination |
| unyieldingness | noun | resoluteness by virtue of being unyielding and inflexible |
| grimness | noun | the quality of being ghastly |
| glumness | noun | a gloomy ill-tempered feeling |
| moodiness | noun | a sullen gloomy feeling |
| moroseness | noun | a gloomy ill-tempered feeling |
| sourness | noun | a sullen moody resentful disposition |
| sullenness | noun | a sullen moody resentful disposition |