stupefy

UK: /ˈstjuːpɪfaɪ/

US: /ˈstupəˌfaɪ, ˈstju-/

US: (sto̅o̅′pə fī′, styo̅o̅′-)

Inflections of 'stupefy' (v): (⇒ conjugate)

stupefies

v 3rd person singular

stupefying

v pres p

stupefied

v past

stupefied

v past p

WordReference Random House Learner's Dictionary of American English © 2025

stu•pe•fy /ˈstupəˌfaɪ, ˈstyu-/   v. [~ + object] , -fied, -fy•ing. 

1. Pathology to make (someone) tired, exhausted, or very bored:
   The teacher's boring lecture stupefied the entire class.
2. Pathology to stun, as with strong emotion:
   We were stupefied by his sudden death.
3. to overwhelm with amazement or surprise:
   stupefied by the sight of all those people rushing through the square.

stu•pe•fac•tion /ˌstupəˈfækʃən/  n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2025

stu•pe•fy  (sto̅o̅′pə fī′, styo̅o̅′-), v.t., -fied, -fy•ing. 

1. Pathology to put into a state of little or no sensibility; benumb the faculties of;
   put into a stupor.
2. Pathology to stun, as with a narcotic, a shock, or a strong emotion.
3. to overwhelm with amazement;
   astound;
   astonish.

• Middle French stupefier Latin stupefacere to benumb, equivalent. to stupe-, stem of stupēre to be numb or stunned + facere to make, do¹; see -fy
• 1590–1600

stu•pe•fied•ness  (sto̅o̅′pə fīd′nis, -fī′id-, styo̅o̅′-), n.  stu′pe•fi′er, n. 
stu′pe•fy′ing•ly, adv. 

Collins Concise English Dictionary © HarperCollins Publishers::

stupefy / ˈstjuːpɪˌfaɪ/ verb ( -fies, -fying, -fied)(transitive)

1. to render insensitive or lethargic
2. to confuse or astound

Etymology: 16th Century: from Old French stupefier, from Latin stupefacere; see stupefacient

ˈstupeˌfying adjective