The Active Participle (-oucí, -ící)

The present active participle is the verbal adjective that means "the one doing X" — spící dítě "the sleeping child," píšící student "the writing student," cestující lidé "travelling people." It corresponds almost exactly to the English -ing relative ("the child sleeping in the next room," "people waiting outside"), and it lets you compress a whole který-clause into a single word in front of the noun. Two facts govern everything about it: it declines like a soft adjective, agreeing fully with its noun, and it can be formed only from imperfective verbs, because only an imperfective has a present tense for it to be built on.

Formation: 3rd-person plural present + -cí

To build the present active participle, take the verb's third-person plural present form, drop the final -í or -ou, and add -cí:

• dělají "they do" → dělající "doing"
• píší "they write" → píšící "writing"
• spí "they sleep" → spící "sleeping"
• nesou "they carry" → nesoucí "carrying"
• jdou "they go" → jdoucí "going"

You will see two endings as a result: -ící (from verbs whose 3pl ends in -í, like prosí, spí, píší, pijí) and -oucí (from verbs whose 3pl ends in -ou, like nesou, jdou, rostou; and the -ají class which gives -ající: dělají → dělající).

Only imperfectives: there is no perfective present participle

This is the hard limit and the most common formation error. A perfective verb has no present tense in Czech — its "present" form is grammatically a future (napíšu "I will write," not "I write"). With no present tense, there is no present active participle. You cannot form *napíšící from napsat; the only present active participle of "write" is píšící, from imperfective psát.

So the participle always describes an action that is ongoing or characteristic, never a completed one. To express "a student who has written / will write," you must fall back on a finite který-clause: student, který napsal / napíše. The participle's tense is locked to the present-imperfective meaning.

It declines like a soft (jarní) adjective

The active participle is an adjective, and it declines fully — agreeing with its noun in gender, number, and case. It follows the soft adjective pattern, the jarní type, whose hallmark is -í almost everywhere (it never takes the hard -ý / -á / -é endings). English speakers stumble here because English participles are frozen ("the working man," "the working woman," "to the working man" — always working). Czech inflects.

If you already know the soft jarní adjective declension, you already know the participle's endings — that is the whole convenience of treating it as an adjective. (For the soft-versus-hard split generally, see hard vs soft adjectives.)

It replaces a present active který-clause

Every present active participle unfolds back into a relative clause: spící dítě = dítě, které spí; cestující lidé = lidé, kteří cestují. The participle drops the relativiser který and the finite verb, leaving a tighter, more compact phrase. This unfolding test is your best self-check — if you cannot restate the participle as a který + present-imperfective clause, you have built it wrong.

When the participle carries its own complement (an object or a phrase), the whole bundle usually follows the noun rather than sitting in front of it:

The full treatment of how participial attributes compress relative clauses — and how the active and passive types divide the work — is on participial attributes as reduced relatives.

Register: bookish, not spoken

The active participle is firmly a feature of (formal) and written Czech: news, official documents, academic prose, literary description. In everyday speech it sounds stiff, and Czechs default to the který-clause instead. Muž, který tam stojí is what you say out loud; tam stojící muž is what you read in a report.

A handful of high-frequency participles have lexicalized into ordinary nouns and adjectives and are perfectly normal in speech, because they are no longer felt as verbs: cestující "passenger," vedoucí "manager / leading," budoucí "future," kolemjdoucí "passer-by." These are exceptions; coining fresh participles in casual conversation marks you as either very formal or non-native.

Common mistakes

Key takeaways

• Form it from the 3rd-person plural present minus its ending, plus -cí: dělají → dělající, nesou → nesoucí, spí → spící.
• It exists only for imperfective verbs — perfectives have no present, hence no present active participle (píšící, never *napíšící).
• It declines like a soft jarní adjective and agrees fully with its noun in gender, number, and case.
• It means "doing X (now or characteristically)" and unfolds into a present který-clause: spící dítě = dítě, které spí.
• Register is bookish: elegant in writing, stiff in speech — except lexicalized forms like cestující, vedoucí, budoucí.