| no picnic(expression, tough, severe, painful, problematic) |
| not easy(expression, tough, severe, painful, problematic) |
| onerous(tough, severe, painful, problematic, trying) |
| operose(tough, severe, painful, problematic, trying) |
| painful(tough, severe, problematic, trying) |
| problem(tough, severe, painful, problematic, trying) |
| problematic(tough, severe, painful, trying) |
| prohibitive(tough, severe, painful, problematic, trying) |
| rigid(tough, severe, painful, problematic, trying) |
| severe(tough, painful, problematic, trying) |
| stiff(tough, severe, painful, problematic, trying) |
| strenuous(tough, severe, painful, problematic, trying) |
| toilsome(tough, severe, painful, problematic, trying) |
| trying(tough, severe, painful, problematic) |
| unyielding(tough, severe, painful, problematic, trying) |
| uphill(tough, severe, painful, problematic, trying) |
| upstream(tough, severe, painful, problematic, trying) |
| wearisome(tough, severe, painful, problematic, trying) |
| ambitious(tough, severe, painful, problematic, trying) |
| easier said than done(expression, tough, severe, painful, problematic) |