Definition of painstaking
(Entry 1 of 2)
: taking pains : expending, showing, or involving diligent care and effort
painstaking research painstaking tasks painstaking accuracy
painstaking
nounDefinition of painstaking (Entry 2 of 2)
: the action of taking pains : diligent care and effort
… greater painstaking to achieve incidental verisimilitude and accuracy of detail … — Times Literary Supplement
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Merriam-Webster unabridged
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Time Traveler for painstaking
The first known use of painstaking was in 1538
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