Yesterday’s solution

ACROSS: 1. Mop 3. Trespassing 9. Serum 10. Interface 11. Usually

12. Hottest 13. Erica 15. Brotherly 17. Frederick 18. Roles 20. Receipt 22. Clinton 24. Vibration 25. Crown 26. Rectangular

27. Sum

DOWN: 1. Misrule 2. Porcupine 3. Tamil 4. Emily 5. Pitchfork

6. Stretcher 7. Inane 8. Greatly 14. Americana 15. Bristling

16. Relations 17. Forever 19. Synonym 21. Cubic 22. Canal

23. Incur