insatiable

UK: /ɪnˈseɪʃəb^əl/

US: /ɪnˈseɪʃəbəl, -ʃiə-/

US: (in sā′shə bəl, -shē ə-)

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

in•sa•tia•ble /ɪnˈseɪʃəbəl, -ʃiə-/   adj. 

1. that cannot be satisfied:
   insatiable ambition.

in•sa•tia•bil•i•ty/ɪnˌseɪʃəˈbɪlɪti, -ʃiə-/  in•sa•tia•ble•ness, n. [uncountable]
in•sa•tia•bly, adv. See -sat-.

WordReference Random House Unabridged Dictionary of American English © 2025

in•sa•tia•ble  (in sā′shə bəl, -shē ə-), adj. 

1. not satiable;
   incapable of being satisfied or appeased:
   insatiable hunger for knowledge.

• Latin insatiābilis; see in-³, satiable
• late Middle English insaciable 1400–50

in•sa′tia•bil′i•ty, in•sa′tia•ble•ness, n. 
in•sa′tia•bly, adv. 
Synonyms

voracious, unquenchable, bottomless.

Collins Concise English Dictionary © HarperCollins Publishers::

insatiable / ɪnˈseɪʃəb^əl -ʃɪə-/, insatiate / ɪnˈseɪʃɪɪt/ adjective

1. not able to be satisfied or satiated; greedy or unappeasable

inˌsatiaˈbility, inˈsatiableness, inˈsatiateness noun

inˈsatiably, inˈsatiately adverb