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Across 1. carefree, cheerful, cheery, chirpy, gladsome, gleeful, jaunty, jocund, jolly, jovial 4. charm, superstition, talisman 5. backbreaking, burdensome, exhausting, fatiguing, formidable 7. astound, bewilder, confound, daze, dumbfound, flabbergast 10. compassionate, considerate, generous, helpful, humane, humanitarian, kindhearted 12. acceptance, accession, acquiescence, admission, admitting 16. advocate, aficionado, backer, believer, devotee, disciple, enthusiast, fan, hanger-on 18. promptitude, promptness, quickness, quickwittedness, sharpness, sprightliness, spryness, suppleness, swiftness 19. crude, green, guileless, infant, jejune, jellybean, juvenile, kid, low tech, naive 20. adherence, ardor, consecration, constancy, dedication, deference, devotion, duty, faithfulness, fealty, fidelity, homage

Down 1. broadness, diameter, distance across, latitude, span, spread, wideness 2. activate, cheer, embolden, encourage, energize, enliven, exalt, excite, fire, gladden 3. adaptation, compliance, composition, compromise, conformity 4. alter, ameliorate, better, change, elevate, enhance, fix, help 5. allay, alleviate, assuage, blunt, calm, compose, conciliate 6. badger, bedevil, beleaguer, bore, bother 8. abhorrent, atrocious, awful, bad, base, beastly 9. display, disport, exhibit, expose, flash, gesture, parade, raise, shake, show 11. aloof, assuming, audacious, autocratic, bossy, bragging, cavalier, conceited, contemptuous, 12. carry out, conduct, control, crack the whip, direct, execute 13. dejected, despairing, despondent, disconsolate, dismal 14. breakable, crisp, crumbling, crumbly, delicate, frail, frangible, friable, inelastic 15. astray, erring, wrong 17. do penance, expiate, make amends, make redress, make reparation 18. pain, sicken, trouble, upset