-eus

See also: eus and EU-s

Dutch

Etymology

From French -eux, from Latin -ōsus.

Pronunciation

• IPA^(key): /øːs/

• Audio

  (file)

Suffix

-eus

1. suffix used to form adjectives

   ambitie → ambitieus

Derived terms

Dutch terms suffixed with -eus

Latin

Etymology 1

From Proto-Italic *-eos, from Proto-Indo-European *-e- +‎ *-yós. Compare with its adoption through Ancient Greek (Etymology 2).

Pronunciation

• (Classical) IPA^(key): /e.us/, [eʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /e.us/, [eus] (stressed on the antepenult)

Suffix

-eus (feminine -ea, neuter -eum); first/second-declension suffix

1. (with materials) Used to form adjectives from nouns, and so to nominally indicate the source of an attribute.

   ‎argentum (“silver”) + ‎-eus → ‎argenteus (“made of silver”)

   ‎ferrum (“iron”) + ‎-eus → ‎ferreus (“made of iron”)

   ‎marmor (“marble”) + ‎-eus → ‎marmoreus (“made of marble”)

   ‎pīnus (“pine tree”) + ‎-eus → ‎pīneus (“made of pine”)

Declension

First/second-declension adjective.

Number	Singular				Plural
Case / Gender	Masculine	Feminine	Neuter		Masculine	Feminine	Neuter
Nominative	-eus	-ea	-eum		-eī	-eae	-ea
Genitive	-eī	-eae	-eī		-eōrum	-eārum	-eōrum
Dative	-eō		-eō		-eīs
Accusative	-eum	-eam	-eum		-eōs	-eās	-ea
Ablative	-eō	-eā	-eō		-eīs
Vocative	-ee	-ea	-eum		-eī	-eae	-ea

Derived terms

• -āceus
• -āneus
• -uleus

Latin terms suffixed with -eus

Descendants

• → English: -eous
• Italian: -eo
• Spanish: -eo

Etymology 2

• From Ancient Greek -εῖος (-eîos), also from Proto-Indo-European *-e- +‎ *-yós. Compare with its inherited form (Etymology 1).
• From Ancient Greek -εῖος (-eîos), from Proto-Indo-European *-iH- +‎ *-wós. Compare with its inherited form -īvus.

Pronunciation

• (Classical) IPA^(key): /ˈeː.us/, [ˈeːʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈe.us/, [ˈɛːus]

Suffix

-ēus (feminine -ēa, neuter -ēum); first/second-declension suffix

1. In adopted Greek words, surviving thus or as -īvus.

   mūsēum (μουσεῖον (mouseîon), cf. mūsīvum from the same source)

Declension

First/second-declension adjective.

Number	Singular				Plural
Case / Gender	Masculine	Feminine	Neuter		Masculine	Feminine	Neuter
Nominative	-ēus	-ēa	-ēum		-ēī	-ēae	-ēa
Genitive	-ēī	-ēae	-ēī		-ēōrum	-ēārum	-ēōrum
Dative	-ēō		-ēō		-ēīs
Accusative	-ēum	-ēam	-ēum		-ēōs	-ēās	-ēa
Ablative	-ēō	-ēā	-ēō		-ēīs
Vocative	-ēe	-ēa	-ēum		-ēī	-ēae	-ēa

References

• “-eus” on page 628/3 of the Oxford Latin Dictionary (1st ed., 1968–82)

Old French

Suffix

-eus

1. Alternative form of -us