Meaning of the word assiduous in English

What does assiduous mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

assiduous

US /əˈsɪdʒ.u.əs/
UK /əˈsɪdʒ.u.əs/
"assiduous" picture

Adjective

showing great care, attention, and effort; persistent

Example:
She was assiduous in her duties, never missing a single detail.
The project succeeded thanks to their assiduous efforts.