Definition: A word that means the same, or approximately the same, as another word. Two words can be considered synonyms even if they aren't interchangeable in all contexts.
Also known as: Sinónimo in Spanish.
Examples: In Spanish, entender and comprender are synonyms (both usually mean "to understand"), as are marido and esposo (both mean "husband"). In English, "late" and "tardy" are synonymous, as are "perfect" and "flawless."