unfatigued

Not yet tired

Unfatigued describes someone who is not tired or worn out, retaining full energy and freshness.

It appears most often in literary or formal contexts where a writer wants to emphasize sustained vigor despite circumstances that might normally cause exhaustion: The soldiers remained unfatigued after the long march.

The word carries a slightly elevated tone compared to simply saying "not tired."

rested

rejuvenated

Made to feel young

unwearied · fresh · renewed · replenished · well-rested · recuperated · revived · reinvigorated · untired · reposed

energized

invigorated

Made to feel lively

dynamic · lively · spirited · vibrant · peppy · sprightly · animated · buoyant · vivacious · zippy

alert

watchful

Carefully attentive, observant

sharp · keen · focused · awake · ready · responsive · clear-headed · bright-eyed · quick-witted · on-guard

robust

vigorous

Having great physical energy

  • strongHaving great physical power
  • sturdySolidly built, durable
  • hardyAble to endure difficulty

resilient · hearty · fit · athletic · hale · stalwart · tough · enduring · tireless · unflagging

Opposites
physical/mental energy state

unfatiguedfatigued

Drained of energy

tired · exhausted · weary · worn out · spent

Family

fatigue, fatigued, fatigues, indefatigable, indefatigably, indefatigability

Familiarity
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Profile
Used worldwide · Timeless · Positive · Everyday, not technical · Rated G