| uncompromising(adjective, severe, severity) |
| unhappy(adjective, low, sad, feelings, gloomy) |
| astringent(adjective, close, hard, severe, harsh) |
| exacting(adjective, tough, severe, firm, harsh) |
| ill-humored(adjective, tough, difficult, harsh, feelings) |
| ill-natured(adjective, difficult, grumpy, crabby, abrupt) |
| moping(adjective, gloomy, melancholy, depressed, ugly) |
| murky(adjective, sorrow, depress, sadness, emotion) |
| puritanical(adjective, tough, severe, firm, harsh) |
| relentless(adjective, close, hard, severe, sharp) |
| rough(adjective, severe, nasty, dark, unpleasant) |
| stiff |
| strait-laced(adjective, close, hard, tough, severe) |
| tenacious |
| tough(adjective, hard, severe, sharp, firm) |
| acrimonious(adjective, tough, severe, low, sad) |
| authoritarian(adjective, tough, severe, firm, harsh) |
| disconsolate(adjective, sorrow, depress, sadness, emotion) |
| down in the dumps(expression, adjective, idiom, feelings, gloomy) |
| hard-nosed(adjective, close, hard, severe, sharp) |