Sub vs. Add

A submarine.

A submarine sandwich: a sandwich made on a long bun.

Example: ‘We can get subs at that deli.’;

(informal) A substitute, often in sports.

Example: ‘With the score 4 to 1, they brought in subs.’; ‘She worked as a sub until she got her teaching certificate.’;

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

(informal) A submissive in BDSM practices.

A subtitle.

Example: ‘I've just noticed a mistake in the subs for this film.’;

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

(colloquial) A subeditor.

(colloquial) A subcontractor.

A subordinate.

A subaltern.

To substitute for.

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

To replace (a player) with a substitute.

Example: ‘He never really made a contribution to the match, so it was no surprise when he was subbed at half time.’;

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

Example: ‘He was subbed on half way through the second half, and scored within minutes.’;

(British) To perform the work of a subeditor or copy editor; to subedit.

To lend.

To subscribe.

(BDSM) To take a submissive role.

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

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

Under.

A subordinate; a subaltern.

a shortened form of submarine, the boat.

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

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

a submersible warship usually armed with torpedoes

be a substitute;

Example: ‘The young teacher had to substitute for the sick colleague’; ‘The skim milk substitutes for cream--we are on a strict diet’;

a submarine

Example: ‘the yachtsman claimed his boat had been sunk by a sub’;

short for "submarine sandwich"

a subscription

Example: ‘the annual sub for the golf club will be £200’;

a substitute, especially in a sporting team

Example: ‘the team pulled back with a goal from sub Chris Malkin’;

a subeditor

Example: ‘the chief sub would be responsible for the look of the paper’;

an advance or loan against expected income

Example: ‘‘I've got no money.’ ‘Want a sub?’’;

replace or be replaced; substitute

Example: ‘he subbed for Armstrong at some gigs’; ‘he got a lot of applause when he was subbed’;

lend or advance a sum to (someone) against expected income

Example: ‘who'll sub me till Thursday?’;

subedit

Example: ‘his copy was mercilessly subbed and rewritten’;

(transitive) To join or unite (e.g. one thing to another, or as several particulars) so as to increase the number, augment the quantity, or enlarge the magnitude, or so as to form into one aggregate.

To sum up; to put together mentally.

Example: ‘to add numbers’;

(transitive) To combine elements of (something) into one quantity.

Example: ‘to add a column of numbers’;

(transitive) To give by way of increased possession (to someone); to bestow (on).

(transitive) To append (e,g, a statement); to say further information.

(intransitive) To make an addition; to augment; to increase.

Example: ‘It adds to our anxiety.’;

To perform the arithmetical operation of addition.

Example: ‘He adds rapidly.’;

(computer science) An act or instance of adding.

(video games) An additional enemy that joined the fight after the primary target.

Example: ‘After engaging the boss for one minute, two adds will arrive from the back and must be dealt with.’;

To give by way of increased possession (to any one); to bestow (on).

Example: ‘The Lord shall add to me another son.’;

To join or unite, as one thing to another, or as several particulars, so as to increase the number, augment the quantity, enlarge the magnitude, or so as to form into one aggregate. Hence: To sum up; to put together mentally; as, to add numbers; to add up a column.

Example: ‘Back to thy punishment,False fugitive, and to thy speed add wings.’; ‘As easily as he can add together the ideas of two days or two years.’;

To append, as a statement; to say further.

Example: ‘He added that he would willingly consent to the entire abolition of the tax.’;

To make an addition. To add to, to augment; to increase; as, it adds to our anxiety.

To perform the arithmetical operation of addition; as, he adds rapidly.

a condition (mostly in boys) characterized by behavioral and learning disorders

make an addition (to); join or combine or unite with others; increase the quality, quantity, zise or scope of;

Example: ‘We added two students to that dorm room’; ‘She added a personal note to her letter’; ‘Add insult to injury’; ‘Add some extra plates to the dinner table’;

state or say further;

Example: ‘`It doesn't matter,' he supplied’;

bestow a quality on;

Example: ‘Her presence lends a certain cachet to the company’; ‘The music added a lot to the play’; ‘She brings a special atmosphere to our meetings’; ‘This adds a light note to the program’;

make an addition by combining numbers;

Example: ‘Add 27 and 49, please!’;

determine the sum of;

Example: ‘Add all the people in this town to those of the neighboring town’;

constitute an addition;

Example: ‘This paper will add to her reputation’;

join (something) to something else so as to increase the size, number, or amount

Example: ‘a new wing was added to the building’; ‘some box offices now add on a convenience charge’;

put in (an additional element, ingredient, etc.)

Example: ‘chlorine is added to the water to kill bacteria’;

contribute (an enhancing quality) to something

Example: ‘the suite will add a touch of class to your bedroom’;

put together (two or more numbers or amounts) to calculate their total value

Example: ‘add the two numbers together’; ‘they added all the figures up’;

say as a further remark

Example: ‘we would like to add our congratulations’; ‘‘I hope we haven't been too much trouble,’ she added politely’;