assiduous
1 synonym and 3 antonyms for assiduous, grouped by meaning and by how common each one is.
Adj — Working hard and steadily at something, especially with great care.
Synonyms
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Antonyms
Etymology
A learned borrowing from Latin assiduus, from assidere ('to sit down to'), from ad- ('to') and sedere ('to sit'). Compare sedulous, and note that it is cognate, via assidere, with assess.
Full origin of assiduous →