Etymology of the English word assiduous
the English word
assiduousderived from the Latin word
assiduus (constant, regular; unremitting; tribute, tax payer, rich person)
derived from the Classical Latin word
sedere (sit, remain; settle)
derived from the Proto-Indo-European root
*sed-using the Latin prefix
ad- (to, in addition)
derived from the Latin word
ad (to; near; to; to; to; near)
Date
The earliest known usage of assiduous in English dates from the 16th century.
Usage
Word found in Modern English
