-eo

See also: Appendix:Variations of "eo"

Contents

Italian

Etymology 1

From Latin -eus.

Pronunciation

• IPA^(key): /eo̯/

Suffix

-eo m (feminine -ea, masculine plural -ei, feminine plural -ee)

1. Used to form adjectives referring to the qualities of the root noun; -en, -eous, -ean

Usage notes

• Terms formed with this suffix are stressed on the antepenultimate (penultimate if the sequence eo is interpreted as vowel + glide).
• The suffix is attached to the stem of a noun indicating a material or substance to express material composition:

Examples:

ferro (“iron”) → ferreo (“made of iron”)

argento (“silver”) → argenteo (“made of silver”)

acqua (“water”) → acqueo (“made of water, watery”)

• When the root is a proper noun, the adjective indicates relation:

Examples:

Cesare (“Caesar”) → cesareo (“Caesarean, of or pertaining to Julius Caesar”)

Medici → mediceo (“of or pertaining to the Medici family”)

• In some cases, adjectives descending from Latin exhibit fossilized characteristics which are otherwise lost in the root noun:

Examples:

corpo (“body”) → corporeo (“bodily, corporeal”) (cfr. Latin corpor-, oblique stem of corpus)

legno (“wood”) → ligneo (“wooden, made from wood”) (cfr. Latin lignum)

oro (“gold”) → aureo (“golden, made of gold”) (cfr. Latin aurum)

Ercole (“Hercules”) → erculeo (“Herculean, pertaining to Hercules”) (cfr. Latin Herculēs)

Etymology 2

From Latin -aeus, from Ancient Greek -αῖος (-aîos).

Pronunciation

• IPA^(key): /ˈɛo̯/
• Hyphenation: -è‧o

Suffix

-eo m (feminine -ea, masculine plural -ei, feminine plural -ee)

1. Used to form adjectives and nouns expressing relation to the root noun; -an, -ean

Usage notes

• The suffix is attached to place names to derive adjectives expressing a relationship of origin or relation, and to create ethnonyms:

Examples:

Etna → etneo (“of or pertaining to mount Etna; person from or inhabitant of the Etna region”)

Ragusa (city in Croatia) → raguseo (“of or pertaining to the city of Ragusa; person from or inhabitant of Ragusa”)

• If the root is a proper noun, the adjective indicates correlation:

Euclide (“Euclid”) → euclideo (“Euclidean, pertaining to Euclid”)

Augusto (“Augustus”) → augusteo (“Augustan, pertaining to emperor Augustus or his time”)

• It can also form adjectives related to body parts:

carotide (“carotid”) → carotideo (“pertaining to a carotid”)

faringe (“pharynx”) → faringeo (“pharyngeal, pertaining to the pharynx”)

Derived terms

► Italian words suffixed with -eo

---

Latin

Pronunciation

• (Classical) IPA^(key): /e.oː/ (stressed on the antepenult)

Etymology 1

From Proto-Italic *-ēō, from verbs with Proto-Indo-European *-éh₁yeti (stative suffix).

Suffix

-eō

2. Forms stative verbs from adjectives.

Conjugation

• -ēscō

Conjugation of -eō (second conjugation, no supine stem, no perfect stem)
indicative		singular			plural
		first	second	third	first	second	third
active	present	-eō	-ēs	-et	-ēmus	-ētis	-ent
	imperfect	-ēbam	-ēbās	-ēbat	-ēbāmus	-ēbātis	-ēbant
	future	-ēbō	-ēbis	-ēbit	-ēbimus	-ēbitis	-ēbunt
passive	present	-eor	-ēris, -ēre	-ētur	-ēmur	-ēminī	-entur
	imperfect	-ēbar	-ēbāris, -ēbāre	-ēbātur	-ēbāmur	-ēbāminī	-ēbantur
	future	-ēbor	-ēberis, -ēbere	-ēbitur	-ēbimur	-ēbiminī	-ēbuntur
subjunctive		singular			plural
		first	second	third	first	second	third
active	present	-eam	-eās	-eat	-eāmus	-eātis	-eant
	imperfect	-ērem	-ērēs	-ēret	-ērēmus	-ērētis	-ērent
passive	present	-ear	-eāris, -eāre	-eātur	-eāmur	-eāminī	-eantur
	imperfect	-ērer	-ērēris, -ērēre	-ērētur	-ērēmur	-ērēminī	-ērentur
imperative		singular			plural
		first	second	third	first	second	third
active	present	—	-ē	—	—	-ēte	—
	future	—	-ētō	-ētō	—	-ētōte	-entō
passive	present	—	-ēre	—	—	-ēminī	—
	future	—	-ētor	-ētor	—	—	-entor
non-finite forms		active			passive
		present	perfect	future	present	perfect	future
infinitives		-ēre	—	—	-ērī	—	—
participles		-ēns	—	—	—	—	-endus
verbal nouns		gerund				supine
		genitive	dative	accusative	ablative	accusative	ablative
		-endī	-endō	-endum	-endō	—	—

Derived terms

► Latin words suffixed with -eo

Etymology 2

From Proto-Italic *-eō, from causative / frequentative verbs with Proto-Indo-European *-éyeti (causative suffix).

Suffix

-eō

2. (no longer productive) Forms causative verbs from primary (third conjugation and some fourth conjugation) verbs.

Conjugation

Conjugation of -eō (second conjugation, no supine stem, no perfect stem)
indicative		singular			plural
		first	second	third	first	second	third
active	present	-eō	-ēs	-et	-ēmus	-ētis	-ent
	imperfect	-ēbam	-ēbās	-ēbat	-ēbāmus	-ēbātis	-ēbant
	future	-ēbō	-ēbis	-ēbit	-ēbimus	-ēbitis	-ēbunt
passive	present	-eor	-ēris, -ēre	-ētur	-ēmur	-ēminī	-entur
	imperfect	-ēbar	-ēbāris, -ēbāre	-ēbātur	-ēbāmur	-ēbāminī	-ēbantur
	future	-ēbor	-ēberis, -ēbere	-ēbitur	-ēbimur	-ēbiminī	-ēbuntur
subjunctive		singular			plural
		first	second	third	first	second	third
active	present	-eam	-eās	-eat	-eāmus	-eātis	-eant
	imperfect	-ērem	-ērēs	-ēret	-ērēmus	-ērētis	-ērent
passive	present	-ear	-eāris, -eāre	-eātur	-eāmur	-eāminī	-eantur
	imperfect	-ērer	-ērēris, -ērēre	-ērētur	-ērēmur	-ērēminī	-ērentur
imperative		singular			plural
		first	second	third	first	second	third
active	present	—	-ē	—	—	-ēte	—
	future	—	-ētō	-ētō	—	-ētōte	-entō
passive	present	—	-ēre	—	—	-ēminī	—
	future	—	-ētor	-ētor	—	—	-entor
non-finite forms		active			passive
		present	perfect	future	present	perfect	future
infinitives		-ēre	—	—	-ērī	—	—
participles		-ēns	—	—	—	—	-endus
verbal nouns		gerund				supine
		genitive	dative	accusative	ablative	accusative	ablative
		-endī	-endō	-endum	-endō	—	—

Etymology 3

See the etymology of the main entry.

Suffix

-eō

1. dative masculine singular of -eus
2. dative neuter singular of -eus
3. ablative masculine singular of -eus
4. ablative neuter singular of -eus

References

• Sihler, Andrew L. (1995) New Comparative Grammar of Greek and Latin, Oxford, New York: Oxford University Press, ISBN 0195083458

---

Spanish

Etymology 1

From Latin -eus.

Suffix

-eo m (feminine -ea, masculine plural -eos, feminine plural -eas)

1. -eous; Used to form adjectives meaning resembling or having characteristics of the related term.

Related terms

• -áceo
• -áneo
• -io

Etymology 2

Suffix

-eo m (plural -eos)

1. Used to create nouns from verbs suffixed with -ear.