Italian

Pronunciation

• IPA^(key): /e.o/

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): /ˈɛ.o/, [ˈɛːo], [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

Latin

Pronunciation

• (Classical) IPA^(key): /ˈe.oː/

Etymology 1

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

Suffix

-eō

1. Forms stative verbs from adjectives.

Inflection

• -ēscō

Derived terms

Etymology 2

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

Suffix

-eō

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

Inflection

Etymology 3

Non-lemma forms.

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

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.