Middle Mongol is an
agglutinating language that makes nearly exclusive use of
suffixes. The word order is
subject–object–predicate if the subject is a noun and also
object–predicate–subject if it is a
pronoun. Middle Mongol rather freely allows for predicate–object, which is due to language contact. There are nine
cases, the
nominative being unmarked. The verbal suffixes can be divided into finite suffixes,
participles and
converbal suffixes. Some of the finite suffixes inflect for subject
number and gender.
Adjectives precede their modificatum and agree with it in number. The pronouns have a
clusivity distinction.
Nominal morphology Number The plural suffixes are distributed as follows:
Case endings and the reflexive suffix The case endings have different allomorphs depending on whether the stem ends in a vowel, the consonant /n/ or another consonant. There is also some chronological variation between earlier and later texts, as marked with the sign > in the table. The dative-locative may denote not only an indirect object, but also local and temporal expressions, both static and dynamic. The accusative ending may be replaced by the unmarked nominative, especially if the noun is not definite and specific; in such cases, stems ending in unstable /n/ lose it. A
reflexive possessive suffix (meaning 'his own', 'my own' and so on) can be placed after a noun declined for any case. Its shape varies depending on phonological factors and the genitive ending of vowel stems is also changed in front of it:
Pronouns The
personal pronouns exhibit an
inclusive-exclusive distinction. They mostly take the same case suffixes as the nouns, but display some
suppletion and stem allomorphy, as summarised below: Other pronouns and related forms are:
Indefinite pronouns are formed by combining the interrogatives and the particle
-ba(r).
Verbal morphology Finite indicative verb forms The finite indicative verbal suffixes express different shades of temporal, aspectual and modal meaning, and the ones with a past meaning also agree with the subject in semantic/biological
gender. There are two present and two past forms, with a modal distinction between a marked and unmarked form within each pair, and a pluperfect. The usual suffixes are displayed in the table below. As above, more innovative variants are introduced with the sign >. In addition, a
durative suffix
-nam is attested only in late Arabic sources (originally the
converbal suffix
-n, on which see below, combined with the copula
a- in the narrative form). There are also some attestations of the finite use of a form in
-d with plural subjects, whose singular may have been, again, a form in
-n. ====
Deontic forms ==== There are a number of forms expressing wishes and commands, as shown in the following table. A polite request can also be expressed by a future passive participle form
-qda-qu (see below).
Participles There are a number of participles. They may be used attributively or as standalone heads of nominal phrases, and several may also be combined with a copula to form complex verbal forms, or simply be used predicatively without a copula. They are listed in the following table.
Converbs Converbs are used as modifiers of the finite verb and their subject is normally the same as that of the finite verb. The following types occur:
Voice The voice morphology can be viewed as part of word formation. The following suffixes may be mentioned: Middle Mongol exhibits a
passive construction that is peculiar to it and maybe
Buryat as well, but is not present in the other
dialects or in the other Mongolic languages. While it might also have fulfilled the function to
foreground the
patient, it usually seems to mark actions which either affect the
subject directly or indirectly affect it in a harmful way. {{interlinear|number=(§131) {{interlinear|number=(§112) {{interlinear|number=(§178) {{interlinear|number=(§163) In §131, Belgütei is negatively affected by an unknown actor. In §112, the addressee is the passive subject. While it is possible for the speech content to be passive subject, it is far less frequent. In §178, the referent of the subject is directly affected, but syntactically, the affected
noun phrase is marked with the reflexive-possessive suffix (that on its own can resemble the
accusative case in other contexts). In §163, it is not the referent of the subject noun phrase, but people related to it that are directly affected to the distress of the subject. The agent may be marked by the
dative (
-a and
-da, but in contrast to
Classical Mongolian never -dur) or the nominative: {{interlinear|number=(§272) {{interlinear|number=(§111) In both of these examples, the
verb stems to which the passive subject is suffixed are
intransitive. Passive suffixes get suffixed to
phrases, not verbal stems, e.g.: {{interlinear|number=(§200) In
modern Mongolian, neither the passivization of
ir- nor the suffixing of passive suffixes to phrases are possible, so the modern translation of §200 runs: {{interlinear|number=(§200) Next to the passive, there is also a
causative that is, however, less notable. Subjects of intransitive verbs of clauses that are causativized get accusative marking (as in §79), while former subjects of
transitive verbs get marked with dative or
instrumental case (as in §188 and §31). In contrast to the passive suffix, the causative suffix does not attach to a phrase, but to single verbs (as long as they denote different actions): {{interlinear|number=(§79) {{interlinear|number=(§188) {{interlinear|number=(§31) Next to these morphemes, Middle Mongol also had suffixes to express
reciprocal and cooperative meaning, namely
-ldu- ~
-lda- and
-lča-. While the plurative/distributive
-čaγa- is common to modern Mongolic languages, it is not attested in Middle Mongol.
Particles There are a number of
enclitic particles: There are three preposed negative particles used with verb forms: == Word formation ==