sebességük

Sebességük is a Hungarian noun phrase formed from the noun sebesség (speed) plus the third-person plural possessive suffix -ük/-jük, meaning "their speed." The form sebességük shows vowel harmony: because sebesség contains front vowels, the suffix adopts the front variant, resulting in -ük with ü. The root sebesség refers to the rate of motion; sebességük indicates that the speed belongs to multiple subjects.

Usage and meaning: sebességük can function as the subject or the object of a clause, indicating ownership of the speed by a group. For example, Sebességük gyors means "Their speed is fast," and Megfigyelték a sebességüket means "They observed their speed." The possessive form can be inflected further when used in different cases or as part of a larger noun phrase.

Grammar and formation: This illustrates Hungarian possessive suffixation and vowel harmony. The third-person plural possessive suffix is -juk/-jük, chosen to harmonize with the stem’s vowels. If the stem ends in back vowels, a different suffix form would be used; with front vowels, -jük is chosen. In sebességük, the front-vowel harmony results in the ü form.

Context and usage: The term appears in discussions of performance, transportation, and physics where the speed of a group or multiple subjects is being described. It is a typical example of how Hungarian builds possessive forms for plural subjects and how vowel harmony affects suffix choice.

See also: Hungarian language, Hungarian possessive suffixes, vowel harmony, morphology.