| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | energetic, zealous |
| Synonyms: | active, aggressive, ardent, bold, determined, dynamic, eager, earnest, lusty, persistent, red-blooded, resolute, spirited, strong, tireless, vigorous, vital |
| Antonyms: | apathetic, enervated, lethargic, unenthusiastic |
| Main Entry: | unflagging |
| Part of Speech: | adjective |
| Definition: | persistent |
| Synonyms: | active, assiduous, constant, diligent, dynamic, energetic, fixed, indefatigable, inexhaustible, persevering, staunch, steady, tireless, unceasing, undeviating, unfailing, unfaltering, unrelenting, unremitting, unretiring, untiring, unwearied |
| Antonyms: | changing, inconstant, variable, wavering |
| Main Entry: | vibrant |
| Part of Speech: | adjective |
| Definition: | alive, colorful |
| Synonyms: | active, animated, dynamic, electrifying, energetic, lively, peppy, responsive, sensitive, sound, sparkling, spirited, vigorous, virile, vital, vivacious, vivid, zesty, zippy |
| Antonyms: | colorless, dull, pale |
| Main Entry: | vigorous |
| Part of Speech: | adjective |
| Definition: | energetic, powerful |
| Synonyms: | active, athletic, ball of fire, bouncing, brisk, dashing, driving, dynamic, effective, efficient, enterprising, exuberant, flourishing, forceful, forcible, hale, hard-driving, hardy, healthy, hearty, intense, lively, lusty, mettlesome, peppy, persuasive, potent, red-blooded, robust, rugged, snappy, sound, spanking, spirited, steamroller, strapping, strenuous, strong, strong as an ox, sturdy, take-charge, take-over, tough, vital, zealous, zippy |
| Notes: | rigorous means demanding strict attention to rules and procedures; vigorous means strong and active physically or mentally |
| Antonyms: | enervated, idle, impotent, inactive, lethargic, weak |
| Main Entry: | vital |
| Part of Speech: | adjective |
| Definition: | lively |
| Synonyms: | animated, dynamic, energetic, forceful, lusty, red-blooded, spirited, strenuous, vibrant, vigorous, vivacious, zestful |
| Notes: | the words crucial, essential, and vital cannot be qualified (cannot be more or less...) |
| Antonyms: | dull, sluggish |
| Main Entry: | vivid |
| Part of Speech: | adjective |
| Definition: | intense, powerful |
| Synonyms: | active, animated, bright, brilliant, clear, colorful, definite, distinct, dramatic, dynamic, eloquent, energetic, expressive, flamboyant, gay, glowing, graphic, highly colored, lifelike, lively, lucid, meaningful, memorable, picturesque, realistic, resplendent, rich, sharp, shining, spirited, stirring, striking, strong, telling, theatrical, true-to-life, vigorous |
| Antonyms: | dull, weak |
| Main Entry: | working |
| Part of Speech: | adjective |
| Definition: | active, occupied |
| Synonyms: | alive, busy, dynamic, effective, employed, engaged, functioning, going, hot*, in a job, in force, in full swing, in gear, in process, laboring, live, moving, on fire, on the job, on track, operative, practical, running, useful, viable |
| Antonyms: | idle, inoperative, passive, unoccupied, unworking |
| Main Entry: | zippy |
| Part of Speech: | adjective |
| Definition: | energetic |
| Synonyms: | active, animated, ball of fire, brisk, chipper, dashing, dynamic, enterprising, full of energy, full of life, full of pep, high-powered, kinetic, lively, peppy, potent, powerful, snappy, speedy, spirited, sprightly, spry, strong, tireless, untiring, vigorous, vital, vivacious, zestful, zingy |
| Main Entry: | changing |
| Part of Speech: | adjective |
| Definition: | changeful |
| Synonyms: | altering, alternating, changeable, developing, dynamic, growing, inconstant, irresolute, mobile, modifying, uncertain, unstable, unsteady, wavering |
| Antonyms: | fixed, stable, unchanging |