IPA: /ɪnˈɡʌlf/
KK: /ɪnˈɡʌlf/
To completely surround or cover something, often in a way that makes it difficult to escape or be seen.
The flames began to engulf the entire building within minutes.
Past: engulfed
Past Participle: engulfed
Engulf is formed from "en-" (meaning to cause to be in) and "gulf" (from Old French *golfe*, meaning a deep inlet of the sea). The word "engulf" means to cause something to be in a deep inlet, often used metaphorically to describe something being swallowed up or overwhelmed.
Think of being 'caused to be in' ('en-') a 'deep inlet' ('gulf') — that's why engulf means to be completely surrounded or overwhelmed.