feszülni
Feszülni is a Hungarian verb meaning to tense up, to become taut, or to stretch tightly. It describes a change of state from slackness to tightness and is used for both concrete things—such as ropes or muscles—and for abstract states, such as nerves or atmosphere, where tension is felt or perceived.
In the physical sense, feszülni is used for things that can become taut. Examples: "A húrok feszülnek"
In figurative use, feszülni describes psychological or social tension. Examples: "Feszülnek az idegek a vizsga előtt"
Grammatical notes: feszülni is an intransitive verb that typically does not take a direct object. It conjugates