verb

schwindeln

lie

Etwas sagen, das nicht wahr ist, um andere zu täuschen.

The verb schwindeln has two primary meanings in German:

To lie or fib: To tell small, mostly harmless lies. It is often used when someone does not tell the absolute truth, but does so without malicious intent or to embellish a story.
To feel dizzy: To experience a sensation of spinning, lightheadedness, or loss of balance. This is typically used in the third person or impersonally (e.g., "mir schwindelt" - I feel dizzy).

Grammar: It is a weak verb. Its forms are: schwindeln (infinitive), schwindelte (past tense), hat geschwindelt (perfect). When used in the sense of feeling dizzy, it is often used as a reflexive verb (sich schwindeln) or with the dative case (mir schwindelt).
Word origin: The word is related to the Middle High German swinden, which originally meant "to vanish" or "to become weak." The transition from the feeling of "weakness/fainting" (dizziness) to "not being solid/truthful" (lying) occurred through the metaphorical sense of things "slipping away" or lacking a firm foundation.