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ENGLISH · A WORD WITH POSSIBILITIES

submarine.

Being, relating to, or made for use underwater, especially beneath the sea.

9 characters3 syllables approx.English language

Meaning & usage

adj/sʌb.məˈɹiːn/Received-Pronunciation/sʊb.məˈɹiːn/Northern-England/sʌb.məˈɾin/Scotland/sʌb.məˈɾiːn/Wales

  1. Being, relating to, or made for use underwater, especially beneath the sea.

    not-comparable

  2. Hidden or undisclosed.

    not-comparable
    a submarine patent

  3. Of a pitch, thrown with the hand lower than the elbow.

    not-comparable
Where this word comes from

Etymology tree Proto-Indo-European *upó Proto-Italic *supo Latin sub Latin sub-der. English sub- Proto-Indo-European *mer-? Proto-Indo-European *móri Proto-Italic *mari Latin mare Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnus Latin marīnus Old French marin Middle French marinbor. Middle English marin English marine English submarine From sub- + marine.

noun/sʌb.məˈɹiːn/Received-Pronunciation/sʊb.məˈɹiːn/Northern-England/sʌb.məˈɾin/Scotland/sʌb.məˈɾiːn/Wales

  1. A boat that can go underwater.

  2. Alternative form of submarine sandwich.

    alt-of · alternative

  3. A pitch delivered with an underhand motion.

  4. Any submarine plant or animal.

  5. A stowaway on a seagoing vessel.

    informal
Where this word comes from

Etymology tree Proto-Indo-European *upó Proto-Italic *supo Latin sub Latin sub-der. English sub- Proto-Indo-European *mer-? Proto-Indo-European *móri Proto-Italic *mari Latin mare Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnus Latin marīnus Old French marin Middle French marinbor. Middle English marin English marine English submarine From sub- + marine.

verb/sʌb.məˈɹiːn/Received-Pronunciation/sʊb.məˈɹiːn/Northern-England/sʌb.məˈɾin/Scotland/sʌb.məˈɾiːn/Wales

  1. To operate or serve on a submarine.

    intransitive

  2. To torpedo; to destroy with a sudden sneak attack.

    transitive

  3. To sink or submerge oneself.

    figuratively · intransitive · sometimes

  4. To slide forwards underneath one's seat belt (during a crash or sudden stop).

    intransitive
    The seatback should always be up while driving so that the occupant doesn't submarine and potentially suffer severe internal injury.
Where this word comes from

Etymology tree Proto-Indo-European *upó Proto-Italic *supo Latin sub Latin sub-der. English sub- Proto-Indo-European *mer-? Proto-Indo-European *móri Proto-Italic *mari Latin mare Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnus Latin marīnus Old French marin Middle French marinbor. Middle English marin English marine English submarine From sub- + marine.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.