thoroughly
THUR-uh-lee/ˈθʌɹ.ə.li/
- 1In a complete and careful way, with nothing left out.
Like cleaning every corner of a room, not just the middle.
She cleaned the kitchen thoroughly before the guests arrived.
Make sure you wash your hands thoroughly with soap and water.
Similarcarefully, meticulously, rigorously, exhaustively, fully
Oppositesuperficially, cursorily, carelessly, perfunctorily
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Origin
From the word "thorough" plus the ending "-ly".