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Across 4. in his 20th year (2 words) 5. to wrench, wrest, extort (2nd princ pt) 7. with [his} army lost (ablative absolute) (2 words) 9. to outlaw 10. he/she/it was being given (impf subj passive 3rd sg) 14. he began to hold (2 words) 15. to avenge, get revenge for (2nd princ pt) 16. he extorted

Down 1. to pay attention, make efforts (2 words) 2. commander of the cavalry (2 words) 3. to flee for refuge 5. I wrench (1st princ pt) 6. work, effort 8. to undertake, support, receive under one's protection (2nd princ pt) 11. to adopt (2nd princ pt) 12. the third man of the Second Triumvirate 13. to lose (2nd princ pt)