more challenging

Main Entry:
ambitious [am-bish-uhs]
Part of Speech: adjective
Definition: requiring great effort, ability
Synonyms: arduous, bold, challenging, demanding, difficult, elaborate, energetic, exacting, formidable, grandiose, hard, impressive, industrious, lofty, pretentious, severe, strenuous, visionary
Antonyms: easy, facile
Main Entry: difficult
Part of Speech: adjective
Definition: hard on someone; hard to do
Synonyms: Gargantuan, Herculean, ambitious, arduous, backbreaker, bothersome, burdensome, challenging, crucial, demanding, difficile, easier said than done, effortful, exacting, formidable, galling, hard-won, heavy, immense, intricate, irritating, labored, laborious, no picnic, not easy, onerous, operose, painful, problem, problematic, prohibitive, rigid, severe, stiff, strenuous, titanic, toilsome, tough, troublesome, trying, unyielding, uphill, upstream, wearisome
Antonyms: calm, easy, free, manageable, plain, simple, uncomplicated
Main Entry: formidable
Part of Speech: adjective
Definition: difficult, overwhelming
Synonyms: all-powerful, arduous, awesome, ballbuster, challenging, colossal, dismaying, effortful, great, hard, impressive, indomitable, intimidating, labored, laborious, mammoth, mighty, murder*, onerous, overpowering, powerful, puissant, rough go, rough*, staggering, strenuous, tall order, toilsome, tough proposition, tough*, tremendous, uphill
Antonyms: easy, not hard, pleasant, trivial
Main Entry: inquisitive
Part of Speech: adjective
Definition: curious
Synonyms: analytical, big-eyed, challenging, forward, impertinent, inquiring, inquisitorial, interested, intrusive, investigative, meddlesome, meddling, nosy, peering, personal, poking, presumptuous, probing, prying, questioning, scrutinizing, searching, sifting, snooping, speculative
Antonyms: incurious, indifferent, unconcerned, uninterested
Main Entry: provocative
Part of Speech: adjective
Definition: aggravating
Synonyms: annoying, challenging, disturbing, exciting, galling, goading, heady, incensing, inciting, influential, inspirational, insulting, intoxicating, offensive, outrageous, provoking, pushing, spurring, stimulant, stimulating
Antonyms: repressive, suppressive, unprovocative
Main Entry: stimulating
Part of Speech: adjective
Definition: exciting
Synonyms: adrenalizing, appealing, arousing, bracing, breathtaking, challenging, electrifying, energizing, exhilarating, gripping, hair-raising, hectic, inspiring, interesting, invigorating, lively, moving, provocative, rousing, spine-tingling, stirring, thought-provoking, thrilling, titillating
Main Entry: quickening
Part of Speech: adjective
Definition: stimulating
Synonyms: adrenalizing, animating, appealing, arousing, bracing, breathtaking, challenging, electrifying, energizing, enlivening, exhilarating, gripping, hair-raising, hectic, inspiring, interesting, invigorating, lively, moving, provocative, rousing, spine-tingling, stirring, thought-provoking, thrilling, titillating, vitalizing, vivifying
Main Entry: reinvigorating
Part of Speech: adjective
Definition: tonic
Synonyms: adrenalizing, appealing, arousing, bracing, breathtaking, challenging, electrifying, energizing, exhilarant, exhilarating, gripping, hair-raising, hectic, innerving, inspiring, interesting, intoxicating, invigorating, lively, moving, provocative, refreshing, renewing, restorative, roborant, rousing, spine-tingling, stimulating, stirring, thought-provoking, thrilling, titillating
Main Entry: renewing
Part of Speech: adjective
Definition: tonic
Synonyms: adrenalizing, appealing, arousing, bracing, breathtaking, challenging, electrifying, energizing, exhilarant, exhilarating, gripping, hair-raising, hectic, innerving, inspiring, interesting, intoxicating, invigorating, lively, moving, provocative, refreshing, reinvigorating, restorative, roborant, rousing, spine-tingling, stimulating, stirring, thought-provoking, thrilling, titillating
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