| Clue | Length | Answer |
|---|---|---|
| onerous | 4 letters | sore |
| onerous | 5 letters | heavy |
| onerous | 5 letters | tough |
| onerous | 6 letters | oppose |
| onerous | 6 letters | severe |
| onerous | 6 letters | uphill |
| onerous | 6 letters | trying |
| onerous | 6 letters | rugged |
| onerous | 7 letters | tedious |
| onerous | 7 letters | weighty |
| onerous | 8 letters | strained |
| onerous | 8 letters | rigorous |
| onerous | 8 letters | unwieldy |
| onerous | 8 letters | wearying |
| onerous | 8 letters | toilsome |
| onerous | 8 letters | tiresome |
| onerous | 9 letters | laborious |
| onerous | 9 letters | punishing |
| onerous | 9 letters | vexatious |
| onerous | 9 letters | wearisome |
| onerous | 9 letters | difficult |
| onerous | 10 letters | burdensome |
| onerous | 10 letters | oppressive |
| onerous | 11 letters | troublesome |
| onerous | 11 letters | responsible |
| onerous | 14 letters | superincumbent |
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