a 1 s 1 s 1 i 1 d 2 u 1 o 1 u 1 s 1
9 letters · 10 points in Scrabble
Meaning
adjective marked by care and persistent effort
originA learned borrowing from Latin assiduus, from assidere (“to sit down to”), from ad- (“to”) + sedere (“to sit”). Compare sedulous. Cognate (via assidere) to assess.
Etymology from Wiktionary, CC BY-SA 3.0