Quick crossword

ACROSS

1. Grooves (7) 5. Postured (5) 8. Leaving behind (13) 9. Perceive (3) 10. Squealers (9) 12. Eat without enthusiasm (4,2) 13. Necessities (6) 15. Without purpose (9) 16. Completely empty (3) 18. Tact (13) 20. Dark-skinned (5) 21. Toboggans (7)

DOWN

1. Idiots (5) 2. Cutbacks (13) 3. Initiate (9) 4. Depart (3,3) 5. Play on words (3) 6. Terrifying (5-8) 7. Absorbs (7) 11. Created at standard size (5-4) 12. Walked with springy, high steps (7) 14. Evaluate (6) 17. Airs (5) 19. Climbing plant (3)