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painstaking

1 ENTRIES FOUND:
painstaking /ˈpeɪnˌsteɪkɪŋ/ adjective
painstaking
/ˈpeɪnˌsteɪkɪŋ/
adjective
Britannica Dictionary definition of PAINSTAKING
[more painstaking; most painstaking]
: showing or done with great care and effort

— painstakingly

adverb