intenzíven

Intenzíven is a Czech form that is generally considered nonstandard or archaic in modern usage. It functions as an adverb describing the manner of an action, roughly corresponding to the English word intensively. In contemporary standard Czech, the preferred adverb for expressing a high degree of intensity is intenzivně (or intensívně in some variants), not intensíven.

The word is typically encountered only in older texts, poetry with stylistic aims, or regional or literary contexts where authors seek to emphasize forcefulness or thoroughness. Because it is not part of the normative language, it may sound unusual or marked to many readers, and editors often replace it with the standard form to avoid stylistic irregularities. When present, intensíven tends to carry a stronger or more formal or emphatic nuance than the regular adverb.

Etymologically, intensíven is formed from an adjective related to intenzívní (intense, intensive) and a suffix that echoes older or regional patterns for forming adverbs. Modern Czech, however, relies primarily on the adverbial suffix -ně to express manner, yielding intenzivně as the standard form. This divergence reflects historical variation in Czech spelling and morphology rather than a distinct, widely used meaning.

In practice, speakers and writers who seek to express intensity in contemporary Czech typically choose intenzivně or rephrase the clause to emphasize thoroughness, rather than using intensíven. For linguistic or stylistic studies, intensíven may be noted as an example of nonstandard or historical variation within the language.

See also: intenzivní, intenzivně, adverbial formation in Czech, stylistic variation in Czech.