assiduus

Latin

Etymology

Etymology tree

Proto-Indo-European *h₂éd

Proto-Italic *ad

Proto-Italic *ad-

Latin ad-

Proto-Indo-European *sed-der.

Proto-Italic *sedēō

Latin sedeō

Latin assideo

Proto-Italic *-wos

Latin -uus

Latin assiduus

From assid(eō) +‎ -uus.

Pronunciation

(Classical Latin) IPA^(key): [asˈsɪ.du.ʊs]
(modern Italianate Ecclesiastical) IPA^(key): [asˈsiː.d̪u.us]

Adjective

assiduus (feminine assidua, neuter assiduum, superlative assiduissimus, adverb assiduē); first/second-declension adjective

constant, regular, perpetual
Synonyms: aeternus, perennis, continuātus, perpetuus, diuturnus
unremitting, incessant

Declension

First/second-declension adjective.

	masculine	feminine	neuter	masculine	feminine	neuter
	singular			plural
nominative	assiduus	assidua	assiduum	assiduī	assiduae	assidua
genitive	assiduī	assiduae	assiduī	assiduōrum	assiduārum	assiduōrum
dative	assiduō	assiduae	assiduō	assiduīs
accusative	assiduum	assiduam	assiduum	assiduōs	assiduās	assidua
ablative	assiduō	assiduā	assiduō	assiduīs
vocative	assidue	assidua	assiduum	assiduī	assiduae	assidua

Descendants

Italian: assiduo
→ Catalan: assidu (learned)
→ English: assiduous (learned)
→ French: assidu (learned)
→ Galician: asiduo (learned)
→ Portuguese: assíduo (learned)
→ Spanish: asiduo (learned)

References

“assiduus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
assiduus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
Carl Meißner, Henry William Auden (1894) Latin Phrase-Book‎^[1], London: Macmillan and Co.
- to be always in some one's company: assiduum esse cum aliquo