irrepressible

UK: /ˌɪrɪˈprɛsɪb^əl/ US: /ˌɪrɪˈprɛsəbəl/ ,(ir′i pres′ə bəl)

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

ir•re•press•i•ble /ˌɪrɪˈprɛsəbəl/   adj. 

1. that cannot be held back or restrained;
   uncontrollable:
   irrepressible laughter.

ir•re•pres•sib•ly, adv. See -press-.

WordReference Random House Unabridged Dictionary of American English © 2025

ir•re•press•i•ble  (ir′i pres′ə bəl), adj. 

1. incapable of being repressed or restrained;
   uncontrollable:
   irrepressible laughter.

• ir-² + repressible 1805–15

ir′re•press′i•bil′i•ty, ir′re•press′i•ble•ness, n. 
ir′re•press′i•bly, adv. 

Collins Concise English Dictionary © HarperCollins Publishers::

irrepressible / ˌɪrɪˈprɛsəb^əl/ adjective

1. not capable of being repressed, controlled, or restrained

ˌirreˌpressiˈbility, ˌirreˈpressibleness noun

ˌirreˈpressibly adverb