unstimulated
Lacking any provocation
Unstimulated describes something not aroused, activated, or provoked into response.
In scientific contexts, it often refers to cells, nerves, or organisms in their baseline state: unstimulated neurons, unstimulated immune cells.
More broadly, it describes a lack of engagement or excitement: The students looked unstimulated by the lecture.
Without activity or purpose
- sedentaryCharacterized by much sitting
- stationaryNot in motion
- staticWithout motion or change
- inertInactive, physically or chemically
motionless · quiescent · dormant · stagnant · passive · immobile · torpid · latent
Slow and inactive
- listlessLacking energy or enthusiasm
- languidWeak and without vigor
- torpidInactive and slow
- fatiguedDrained of energy
weary · enervated · drowsy · sleepy · indolent · lackadaisical · languorous · somnolent
Lacking physical sensation
- unreactiveNot prone to reactions
- nonreactiveChemically inactive substance
- insensibleUnaware, without feeling
- unfeelingWithout compassion or emotion
deadened · desensitized · blunted · unawakened · untouched · unaffected · inert · cold
Without feeling or concern
- disinterestedFree from personal stakes
- nonchalantCalmly unconcerned
- detachedApart or uninvolved
- impassiveWithout visible emotion
blasé · uncaring · unconcerned · dispassionate · neutral · unaffected · aloof · insouciant
idle
Without activity or purpose
- sedentaryCharacterized by much sitting
- stationaryNot in motion
- staticWithout motion or change
inert · motionless · quiescent · dormant · stagnant · passive · immobile · torpid · latent · fallow
sluggish
Slow and inactive
fatigued · weary · enervated · drowsy · sleepy · indolent · lackadaisical · languorous · somnolent · heavy
numb
Lacking physical sensation
- unreactiveNot prone to reactions
- nonreactiveChemically inactive substance
- insensibleUnaware, without feeling
unfeeling · deadened · desensitized · blunted · unawakened · untouched · unaffected · inert · cold · frigid
apathetic
Without feeling or concern
- disinterestedFree from personal stakes
- nonchalantCalmly unconcerned
- detachedApart or uninvolved
impassive · blasé · uncaring · unconcerned · dispassionate · neutral · unaffected · aloof · insouciant · unmoved
boring
Failing to engage interest
- monotonousUnchangingly dull
- tediousBoring through length
- uninterestingFailing to hold attention
drab · humdrum · lifeless · flat · prosaic · vapid · insipid · stale · tiresome · unexciting
unstimulatedstimulated
Prompted into action
engaged · interested · fascinated · captivated · enthralled
unstimulatedstimulated
Prompted into action
activated · excited · responsive · reactive · sensitized