What is the meaning of Sub?

ISO 639-3 language code for Suku.

Abbreviation of submarine.

Clipping of submarine sandwich: a sandwich made on a long bun.

Clipping of submersible.

Clipping of substitute, often in sports or teaching.

Clipping of subscription (“a payment made for membership of a club, etc.”).

Clipping of subtitle

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

Clipping of subeditor

Clipping of subcontractor

Clipping of subwoofer

Clipping of submission (of a work for publication).

Clipping of submissive

Clipping of subordinate

Clipping of subaltern

Clipping of subscription (or a subscriber) to an online channel or feed.

Clipping of subsistence money, part of a worker's wages paid before the work is finished.

Clipping of subreddit.

Clipping of subject (“particular area of study”)

Clipping of subliminal (“an audio or video recording intended to produce physical or psychological changes in the listener”)

To substitute for.

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

To replace (a player) with a substitute.

To bring on (a player) as a substitute.

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

To subtitle (usually a film or television program).

To lend (a person) money.

To subscribe.

To take a submissive role.

Under.

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

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

submarine, sub

under, below

under, below

skin-diver, scuba diver

bottom, submissive (BDSM partner)

1. under, beneath
2. behind
3. at the feet of
4. within, during
5. about, around (time); just before, just after, shortly before, shortly after

under, beneath

behind

at the feet of

within, during

about, around (time); just before, just after, shortly before, shortly after

1. under, up to, up under, close to (of a motion)
2. until, before, up to, about

under, up to, up under, close to (of a motion)

until, before, up to, about

to visit (to go and meet someone)

to examine (to observe or inspect carefully)

alternative form of subcelebridade

under, below, beneath, underneath

under

a subwoofer, a bass loudspeaker

a subtitle

to subtitle

to subscribe

Source: wiktionary.org