- Today's Word
Oscillate
OSS-uh-layt
Definition
(verb) To move or swing back and forth in a steady rhythm; to waver between opposing positions or decisions.
Example
She oscillated between taking the job offer and going back to school.
Fun Fact
From Latin oscillare, “to swing,” the word was first used in reference to physical devices like pendulums and fans. Over time, it took on metaphorical meaning—describing emotional or intellectual back-and-forth. In psychology and politics alike, oscillation suggests indecision, ambivalence, or changing perspectives.
(adjective) Translucently clear; easily understood; expressed with perfect clarity
His pellucid explanation of the complex tax code left the entire room nodding in understanding.
Pellucid derives from the Latin pellucidus, meaning “transparent” or “allowing light through,” from per (“through”) + lucere (“to shine”). It entered English in the 17th century, used first to describe physically clear substances like water or glass, and later extended metaphorically to describe clear, luminous writing and thought.