strenuous

Main Entry:
strenuous [stren-yoo-uhs]
Part of Speech: adjective
Definition: difficult; requiring hard work
Synonyms: Herculean, arduous, demanding, effortful, energy-consuming, exhausting, hard, laborious, mean, operose, taxing, toilful, toilsome, tough, tough going, uphill, wicked
Antonyms: easy, effortless, facile
Main Entry: aggressive
Part of Speech: adjective
Definition: assertive
Synonyms: assertory, bold, brassy, cheeky*, cocky*, come on, domineering, dynamic, energetic, enterprising, flip*, forceful, fresh*, get up and go, go after, hard sell, imperious, masterful, militant, nervy, pushing, pushy, sassy, shooting from the hip, smart alecky, smart*, strenuous, tough, vigorous, zealous
Antonyms: complaisant, laid-back
Main Entry: ambitious
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: arduous
Part of Speech: adjective
Definition: difficult, hard to endure
Synonyms: backbreaking, burdensome, exhausting, fatiguing, formidable, grueling, harsh, heavy, labored, laborious, murder, no picnic, onerous, painful, punishing, rigorous, rough, severe, strenuous, taxing, tiring, toilsome, tough, troublesome, trying, uphill
Antonyms: easy, facile, motivating
Main Entry: busy
Part of Speech: adjective
Definition: active, on the go
Synonyms: bustling, busy as a beaver, energetic, full, fussy, hectic, humming, hustling, lively, popping, restless, strenuous, tireless, tiring
Antonyms: idle, inactive, lazy
Main Entry: combative
Part of Speech: adjective
Definition: aggressive
Synonyms: antagonistic, bellicose, belligerent, cantankerous, contentious, cussed, energetic, fire-eating, gladiatorial, hawkish, militant, ornery*, pugnacious, quarrelsome, ructious, scrappy, strenuous, trigger-happy, truculent, warlike, warring
Antonyms: agreeable, compromising, peaceful, peaceloving
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: dynamic
Part of Speech: adjective
Definition: active, vital
Synonyms: activating, aggressive, changing, charismatic, coming on strong, compelling, driving, effective, electric, energetic, energizing, enterprising, forceful, forcible, go-ahead, go-getter, go-getting, highpowered, hyped-up, influential, intense, lively, lusty, magnetic, peppy*, play for keeps, play hard ball, potent, powerful, productive, progressive, red-blooded, strenuous, vehement, vigorous, vitalizing, zippy
Antonyms: apathetic, boring, dull, inactive, passive, unexciting
Main Entry: energetic
Part of Speech: adjective
Definition: full of life; forceful
Synonyms: active, aggressive, animated, ball of fire, breezy, brisk, demoniac, driving, dynamic, enterprising, forcible, fresh, hardy, high-powered, indefatigable, industrious, kinetic, lively, lusty, peppy, potent, powerful, red-blooded, rugged, snappy, spirited, sprightly, spry, stalwart, strenuous, strong, sturdy, tireless, tough, unflagging, untiring, vigorous, vital, vivacious, zippy
Antonyms: idle, inactive, lazy, lethargic, lifeless, slow, sluggish, tired
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