There are various ways of encoding causation, which form somewhat of a continuum of "compactness."
Lexical Lexical causatives are common in the world's languages. There are three kinds of lexical causatives, the unifying factor being that the idea of causation is part of the semantics of the verb itself. (English, for example, employs all three of these kinds of lexical causatives.) On the surface, lexical causatives look essentially the same as a regular transitive verb. There are a few reasons why this is not true. The first is that transitive verbs generally do not have an intransitive counterpart but lexical causatives do. The semantics of the verbs show the difference as well. A regular transitive verb implies a single event while a lexical causative implies a realization of an event: :(a) John kicked the ice but nothing happened to it. :(b) *John melted the ice but nothing happened to it. Sentence (b) is judged ungrammatical because it goes against the successful event implied by the verb
melt.
One word Some languages, including English, have
ambitransitive verbs like
break,
burn or
awake, which may either be
intransitive or
transitive ("The vase broke" vs. "I broke the vase.") These are split into two varieties:
agentive and patientive ambitransitives. Agentive ambitransitives (also called S=A ambitransitives) include verbs such as
walk and
knit because the S of the intransitive corresponds to the A of the transitive. For example: :(1a)
Mary (S)
is knitting. :(1b)
Mary (A)
is knitting a scarf (O). This type of ambitransitive does
not show a causative relationship. For patientive ambitransitives (also called S=O ambitransitives), such as
trip and
spill, the S of the intransitive corresponds to the O of the transitive: :(2a)
The milk (S)
spilled. :(2b)
Jim (A)
spilled the milk (O). These are further divided into two more types, based on speakers' intuition. Some, like
spill in (2), are primarily transitive and secondarily intransitive. Other verbs like this include
smash and
extend. Other verbs, such as
trip in (3) go the other way: they are primarily intransitive and secondarily transitive. :(3a)
John (S)
tripped. :(3b)
Mary (A)
tripped John (O). Other examples of this type include
explode,
melt,
dissolve,
walk, and
march. It is this type of ambitransitive verb that is considered a causative. This is given some anecdotal evidence in that to translate (3b) above into languages with morphological causatives, a morpheme would need to be attached to the verb. Lexical causatives are apparently constrained to involving only one agentive argument. Semantically, the causer is usually marked as the patient. In fact, it is unlikely whether any language has a lexical causative for verbs such as
swim,
sing,
read, or
kick.
Irregular stem change English
fell (as in "Paul felled the tree") can be thought of as a lexical causative of
fall ("the tree fell"), exemplifying this category. This is considered a lexical change because it is not at all productive. If it were productive, it would be an internal change morphological causative (below).
Two words English has verb pairs such as
rise and
raise,
eat and
feed,
see and
show where one is essentially the causative correspondent of the other. These pairs are linked semantically by various means, usually involving translation. For example,
burn as in "The grass burned" (intransitive) would translate as
awa- in
Yimas, while
burn as in "I burned the grass" (transitive) would translate as
ampu- in Yimas.
Morphological There are eight different morphological processes by which a causative may be marked, roughly organized by compactness: Within morphological causatives, this degree of compactness bears an important variable when considering the semantics of the two processes. For example, mechanisms that do not change the length of the word (internal change, tone change) are shorter than those that lengthen it. Of those that lengthen it, shorter changes are more compact than longer. Verbs can be classified into four categories, according to how susceptible they are to morphological causativization: • Inactive intransitives (
faint) • Middle/ingestive verbs (either intransitive or transitive such as
sit down,
ascend,
put clothes on,
eat, or
learn) • Active intransitives (
work) • Transitive verbs (
carry) This hierarchy has some exceptions, but it does generally hold true. For example, given a text of
Guarani, only about 16% of causatives apply to transitives. For some languages, it may not apply to transitive verbs
productively and may only apply to verbs that denote abstract action or consumption of food. Additionally, within
Athabaskan family, all languages can causativize inactive intransitives, but not all of them can causativize active intransitives or even transitives.
Two verbs in one predicate A number of languages involve a form of analytic causative that involves two verbs in a single predicate, such as
French,
Spanish,
Italian and
Catalan. For example, when French
faire is used as a causative, the causee noun phrase cannot occur between it and the next verb. Unlike most other
Romance languages,
Portuguese uses a periphrastic construction like that of
English, discussed below.
Kiowa uses a similar mechanism. Verbs can be compounded with the transitive verb
ɔ́m to create a causative:
Periphrastic constructions Some languages use a periphrastic (or analytic) construction to express causation and typically include two verbs and two clauses. English causatives prototypically use
make (but other verbs such as
cause,
order,
allow,
force,
compel can be used) in the main clause with the lexical verb in a
subordinate clause, as in "I made him go." Other languages, such as
Persian, have the opposite syntax: the causative is in a subordinating clause and the main verb is in the main clause, as in the following example from
Macushi:
Canela-Krahô has a combination of the two in which the causee is marked twice, once in each clause: Portuguese also has a periphrastic construction like that of English but unlike most other Romance languages: Analytic causatives are sometimes not considered to be valency increasing devices, but they can semantically be interpreted as such. ==Semantics==