Clitic Climbing and Restructuring Variation

In a complex predicate, a Serbian object or reflexive clitic may surface in the higher clause even though its semantic role belongs to the lower verb. Compare Јелена мора да му пошаље уговор with Јелена му мора послати уговор. Dative му is the recipient of пошаље/послати, but in the infinitival version it joins the clitic domain of finite мора. This is conventionally called clitic climbing.

The phenomenon is not a mechanical permission to move clitics across any verb. It is strongest in tightly integrated, event-like structures with modals, phase verbs, and certain same-subject infinitival or да + present complements. With finite да-complements, judgments are gradient and vary by predicate, prosody, region, and speaker. Contemporary experimental work therefore supports tendencies, not a single categorical list.

Three neutral baselines

Start from these productive patterns:

The first two are stable neutral models. The third is widespread with a tightly integrated modal construction but not equally preferred by every speaker or in every style. Do not “correct” all such examples, and do not infer that the pattern extends to every да-clause.

Both infinitive and same-subject да + present are standard Serbian. Their relative frequency varies across regions, registers, and individual usage; neither should be declared universally wrong.

What restructuring means

A restructuring predicate and its complement can behave like one tightly integrated event. Modals such as морати, моћи, смети, phase verbs such as почети, наставити, престати, and some volitional or attempt predicates often create this environment.

In all three, га is the object of “read,” not “begin.” Phase почети selects an ongoing activity, so lower читати/чита is imperfective. Clitic placement does not change that aspectual requirement.

Reflexive се participates in the same structural contrast:

The first gives се a local host inside the да domain. In the infinitival version, finite мораш provides the only suitable early host.

Infinitives and why the clitic appears high

An infinitive has no finite second-position domain comparable to a full Serbian clause. With a restructuring verb, its weak pronouns therefore normally join the matrix clitic cluster.

Here both му and га belong semantically to показати, but their surface position is after first constituent Милица. A full stressed phrase can remain low because it is not a clitic:

Do not place a weak clitic after the infinitive on the model of Romance languages. Serbian показати му га can occur only under special prosodic or marked configurations and is not the neutral learner pattern; use му га показати within the higher domain.

Internal order does not change during climbing

Climbing relocates the cluster's domain, not the order of its members. Dative precedes accusative: му га. Auxiliary and reflexive positions follow the same cluster rules as elsewhere.

Negation attaches to finite мора, while му га still occupies the early cluster. Neither climbing nor negation licenses га му in the intended neutral order.

The clitic-cluster chart gives the complete auxiliary–dative–accusative–reflexive ordering, including the special placement of је.

Да-complements form stronger or weaker boundaries

Local placement after да is always the safest baseline:

With event-like, same-subject complements, many speakers also accept a matrix clitic: Никола јој покушава да објасни... Acceptance is not uniform. The more independently propositional the complement is, the less available climbing becomes.

The contrast is semantic and structural. Морати да пошаље describes one modalized sending event; тврдити да је одговорио relates a claiming event to a proposition with its own subject and tense.

A different embedded subject blocks the tight reading

Restructuring is strongest when the matrix and embedded subject are understood as the same participant. An overt different subject signals a fuller embedded clause and strongly resists climbing.

This diagnostic is stronger than memorizing a verb list. The same matrix verb can occur with a small same-subject event complement or a fuller clause, and the latter establishes a clearer boundary.

Second position is recalculated in the chosen domain

A climbed clitic cannot stand first. It appears after the first prosodic-syntactic constituent of the matrix domain.

These orders package information differently:

• Данас establishes a time frame.
• Fronted Уговор is a contrastive topic against рачун.
• Final contrast а не рачун makes the object the narrow focus.

The clitic remains early in each version, but “early” is calculated after the first constituent. Serbian word order is flexible, not free: moving the object or time expression changes topic, focus, and prosody.

A practical diagnostic

Use four questions when judging a proposed climb:

1. Is the matrix predicate modal, phase-like, volitional, or an attempt predicate rather than a reporting or belief verb?
2. Do both verbs describe one tightly integrated event?
3. Is the understood subject the same?
4. Can the clitic cluster occupy a natural second position in the matrix prosodic phrase?

Four “yes” answers favor climbing; an independent proposition, different subject, pause before да, or first-position clitic disfavors it. This is a gradient diagnostic, not a proof that every speaker must accept the result.

Practice Tasks

Task 1: Keep the proposition, change the complement

Task 2: Test the boundary

Common Mistakes

Treating every да-clause as transparent

Putting a clitic first

Scrambling the internal cluster

Declaring one complement universally wrong

Moving words without tracking focus

Key Takeaways

• Clitic climbing places a lower verb's clitic in the higher second-position domain.
• Infinitival restructuring strongly favors a matrix cluster; local placement after да is the safest finite baseline.
• Climbed да patterns are real but gradient across predicates, clause sizes, speakers, and prosodies.
• Different embedded subjects and propositional predicates resist climbing.
• Climbing never licenses first-position clitics or changes internal cluster order.
• Alternative orders can preserve the proposition while changing topic and focus.