assiduus

Latin

Etymology

Etymology tree

Proto-Indo-European *h₂éd

Proto-Italic *ad

Latin 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): /asˈsi.du.us/, [äs̠ˈs̠ɪd̪uʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /asˈsi.du.us/, [äsˈsiːd̪uːs]

Adjective

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

1. constant, regular, perpetual

   Synonyms: aeternus, aeternus, perennis, continuātus, perpetuus, diuturnus

2. unremitting, incessant

Declension

First/second-declension adjective.

	singular				plural
	masculine	feminine	neuter		masculine	feminine	neuter
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

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