assiduous

adj.

1. Constant in application or attention; diligent: an assiduous worker who strove for perfection. See synonyms at busy.
2. Unceasing; persistent: assiduous research.

[From Latin assiduus, from assidēre, to attend to : ad-, ad- + sedēre, to sit.]

assiduously as·sid'u·ous·ly adv.
assiduousness as·sid'u·ous·ness n.

(uh-SIJ-oo-uhs)

adjective
Constant; persistent; industrious.

Etymology
From Latin assiduus, from assidere (to attend to, to sit down to), from ad- (toward) + sedere (to sit). Ultimately from the Indo-European root sed- (to sit) that is also the source of sit, chair, saddle, assess, sediment, soot, cathedral, and tetrahedron

Usage
"The reason for his presence there [a Donald Duck statue in a temple garden] remains a mystery despite the author's most assiduous inquiries." — Jeff Kingston; Chiang Mai: Thailand's beguiling Rose of the North; The Japan Times (Tokyo); Jun 28, 2009.

---

adjective

Characterized by steady attention and effort: diligent, industrious, sedulous, studious. See industrious/lazy.

adj

Definition: hard-working
Antonyms: lazy, neglectful, negligent

---

diligent; persistent

IN BRIEF: Diligent; hardworking.

Xavier's assiduous attitude impressed his boss.

Tutor's tip: An "acidulous" liquid is caustic or acidic. To describe someone as hardworking and intelligent, it's best to use the word "assiduous."

Dansk (Danish)
adj. - ihærdig, flittig, samvittighedsfuld, pligtopfyldende

Nederlands (Dutch)
hardwerkend, volhardend, dienstvaardig

Français (French)
adj. - assidu

Deutsch (German)
adj. - eifrig, gewissenhaft

Ελληνική (Greek)
adj. - επιμελής, επίμονος, καρτερικός

Italiano (Italian)
assiduo

Português (Portuguese)
adj. - assíduo, aplicado, perseverante

Русский (Russian)
прилежный, усердный

Español (Spanish)
adj. - asiduo, perseverante

Svenska (Swedish)
adj. - trägen, flitig

中文（简体）(Chinese (Simplified))
勤勉的, 刻苦的

中文（繁體）(Chinese (Traditional))
adj. - 勤勉的, 刻苦的

한국어 (Korean)
adj. - 근면한, 주도 면밀한, 헌신적인

日本語 (Japanese)
adj. - 勤勉な, 根気強い, 行き届いた

العربيه (Arabic)
‏(صفه) مجتهد, مواظب, دائم المجامله‏

עברית (Hebrew)
adj. - ‮שקדן, מתמיד, מגלה שימת-לב‬

If you are unable to view some languages clearly, click here.

To select your translation preferences click here.