While "engulf" itself doesn't have a direct root word in English, it comes from the Old French word "engolfer" which means "to swallow up," and the root of that word is "golf," which means "a gulf, an abyss."
While "engulf" itself doesn't have a direct root word in English, it comes from the Old French word "engolfer" which means "to swallow up," and the root of that word is "golf," which means "a gulf, an abyss."