UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/əˈpriːʃəbəl/

US:USA pronuncation: IPAUSA pronuncation: IPA/əˈpriʃiəbəl, -ʃəbəl/

US:USA pronunciation: respellingUSA pronunciation: respelling(ə prēshē ə bəl, -shə bəl)

WordReference Random House Learner's Dictionary of American English © 2020
ap•pre•ci•a•ble /əˈpriʃiəbəl, -ʃəbəl/USA pronunciation   adj. 
  1. enough to be noticed; considerable:an appreciable sum of money.
ap•pre•ci•a•bly /əˈpriʃiəbli, -ʃəbli/USA pronunciation  adv. 

WordReference Random House Unabridged Dictionary of American English © 2020
ap•pre•ci•a•ble  (ə prēshē ə bəl, -shə bəl),USA pronunciation adj. 
  1. sufficient to be readily perceived or estimated;
    considerable:There is an appreciable difference between socialism and communism.
ap•preci•a•bly, adv. 
  • appreci(ate) + -able 1810–20

Collins Concise English Dictionary © HarperCollins Publishers::
appreciable /əˈpriːʃɪəbəl -ʃəbəl/ adj
  1. sufficient to be easily seen, measured, or noticed

apˈpreciably adv
'appreciable' also found in these entries (note: many are not synonyms or translations):

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