-um-

From the neuter suffix Latin -um.

-um-

1. related in an unspecified way. A lexical affix with no fixed meaning or part of speech.^[1]

   ‎brako (“arm”) → ‎brakumi (“to hug”)

   ‎dekstra (“right”) → ‎dekstruma (“clockwise”)

   ‎komuna (“common”) → ‎komunumo (“community”)

   ‎mondo (“world”) → ‎mondumo (“high society”)

   ‎proksima (“near”) → ‎proksimume (“approximately”)

   ‎kruco (“cross”) → ‎krucumi (“to crucify”)

   ‎kolo (“neck”) → ‎kolumo (“collar”)

Because meanings of words derived with this affix cannot be predicted, each derivation requires a separate dictionary entry. The part of speech is specific to each coining, and not inherent in either the affix or the stem to which it is attached.

Among other uses:

• With body parts, -um- may signify a related piece of clothing: kolumo, manumo, plandumo, nazumo, hufumo. Or it may signify an action using that body part: brakumi, palpebrumi, okulumi.
• With things used to kill people, -um- may signify a method of execution: gasumi, ŝtonumi, krucumi.
• With numbers, -um- may signify a numeric base: duuma, okuma, dekuma.
• With things enjoyed at leisure, -um- may signify a leisure activity: butikumi, fumumi, bierumi, esperantumi.

This affix should be used with care when wanting to create new words, because they would likely not be understood by most speakers because of its unpredictable meaning.

From Proto-Malayo-Polynesian *-um-, from Proto-Austronesian *-um-.

-um-

1. an agent trigger infix

From Esperanto -um-.

-um-

1. suffix to be used only in specific cases where the meaning is also specified

   honoro (“honor”) → honorumala (“honorary”)

   kruco (“cross”) → krucumar (“to cross (another road etc.)”)

   orelo (“ear”) → orelumo (“ear-covering, earlap”)

The suffix -um- has an indeterminate meaning. The derivations of this suffix is only made by the Language Committee of Ido. It forms derivation, of which the meaning has an indefinite relation with the idea expressed by the prime root. The link which remain between them helps with the memorization, but, when one doesn't know the meaning of the derivation, only the lexicon can surely provide it.^[1] There exists only a total of 30 words with this suffix in Ido.

Borrowed from Javanese -um-.

-um-

1. This term needs a translation to English. Please help out and add a translation, then remove the text {{rfdef}}.

   sinar → suminar

• “-um-”, in Kamus Besar Bahasa Indonesia [Great Dictionary of the Indonesian Language] (in Indonesian), Jakarta: Agency for Language Development and Cultivation – Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia, 2016

From Proto-Malayo-Polynesian *-um-, from Proto-Austronesian *-um-.

-um-

1. intransitive verb affix
2. (southern) inflectional affix marking irrealis mood with transitive verbs

From Proto-Malayo-Polynesian *-um-, from Proto-Austronesian *-um-.

-um-

1. active verb

• a-
• ma-

• um- — prefix
• -im- — when first vowel is /i/, obsolete

Inherited from Proto-Malayo-Polynesian *-um-, from Proto-Austronesian *-um-.

• (Standard Tagalog) IPA^(key): /um/ [ʊm]
• Syllabification: -um-

-um- (Baybayin spelling ᜓᜋ᜔)

1. actor trigger: to do something

   Kumain ako.

   I ate. (I is focused.)

2. no trigger: expresses natural phenomena

   Lumindol kanina.

   An earthquake occurred a while ago. (Nothing is focused.)

3. actor trigger: to become or get

   Parang pumayat si Gloria.

   It looks like Gloria got thinner. (Gloria is focused.)

4. actor trigger: (with root word reduplication) to do something occasionally, at random, a little, a bit, now and then or here and there

   Kumakain-kain ako pag wala akong magagawa.

   I eat a little bit when I have nothing to do. (I is focused.)

• The affix mag- is usually used for verbs which involve an exterior object, whereas um- is used for verbs which don't.

  Nagtanong ako sa guro. ― I asked the teacher.

  Umalis na ako. ― I already left.

• Mag- is also used for deliberate actions, while um- can be used for involuntary actions.

  Lumalaki ang bata. ― The child grew.

• Some words can also change meaning if either one of them is used.

  Root word: alis = to go

  mag-alis = to remove

  umalis = to leave

  Root word: sakay = riding

  magsakay = to load

  sumakay = to ride

• Historically, the affix had the variant -im-, that is used when affixed to words that have /i/ as its first vowel. This variant is no longer used in modern Tagalog.

  ‎linaw + ‎-im- → ‎liminaw

  ‎inom + ‎im- → ‎iminom

• Tagalog also used to have a separate infix -ungm- (and variant -ingm- before /i/) for the complete aspect and progressive aspects in the active trigger. The affixes had since fallen out of use in favor of -um-, merging with the infinitive form of the active trigger.