This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Informal See submarine.

n. Informal See submarine. See Regional Note at submarine.

n. A substitute.

verb-intransitive. To act as a substitute.

n. A submarine.

n. A submarine sandwich—a sandwich made on a long bun.

n. A substitute.

n. A substitute in a football (soccer) game: someone who comes on in place of another player part way through the game.

n. Short for subscription: a payment made for membership of a club, etc.

n. A submissive in BDSM practices.

n. Short for subtitle.

n. A subroutine (sometimes one that does not return a value, as distinguished from a function, which does).

n. A subordinate.

n. A subaltern.

v. To substitute for.

v. To work as a substitute teacher, especially in primary and secondary education.

v. (soccer) To replace (a player) with a substitute.

v. (soccer) Less commonly, and often as sub on, to bring on (a player) as a substitute.

v. To perform the work of a subeditor or copy editor; to subedit.

v. To lend.

v. To subscribe.

preposition. Under.

v. To coat with a layer of adhering material; to planarize by means of such a coating.

v. To prepare (a slide) with an layer of transparent substance to support and/or fix the sample.

n. A subordinate; a subaltern.

n. a shortened form of submarine, the boat.

n. a shortened form of submarine sandwich; also called hero, hero sandwich, and grinder.

n. A prefix of Latin origin, meaning ‘under, below, beneath,’ or ‘from under.’

n. A subaltern; a subordinate.

n. A substitute; specifically, one who is willing to serve as a substitute for a regular compositor on a newspaper.

To act as a substitute; specifically, to act as the substitute of another in a composing-room.

To subirrigate. See subbing, 2.

An abbreviation of subject

of substitute

of suburb

of suburban.

v. be a substitute

n. a submersible warship usually armed with torpedoes

n. a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States

"The term sub-irrigated refers to the high water table that keeps the soil moist much of the year."

subbed    subbing    subs   

interchange    change    exchange    sandwich   

switch   

subbed    subbing    submarine    hero    hero sandwich    grinder    submarine sandwich   

subordinate    subaltern    hoagie    grinder   

Cub    Hub    bub    chubb    club    cub    drub    dub    grub    hub   

submarine    ab    cum    quoque    EO    fuit    atque    Luce    ad    quae