painstakingly

/ˈpeɪnzˌteɪkɪŋli/
adverb
  1. In a way that shows great care and thoroughness; with a lot of effort and attention to detail.
    • The artist painstakingly painted each tiny leaf on the tree in the background.
    • He painstakingly rebuilt the old engine, piece by piece, over several months.
    • She painstakingly checked every number in the report to make sure there were no mistakes.
What does "painstakingly" mean? | whatsthatwordmean | whatsthatwordmean