sub.

sub. is the abbreviation of substitute.

sub. is the abbreviation of subaudi.

Meaning of substitute

substitute (third-person singular simple present substitutes, present participle substituting, simple past and past participle substituted)

(transitive) To use in place of something else, with the same function.
- I had no shallots so I substituted onion.
(transitive) To use X in place of Y.
- I had to substitute new parts for the old ones.
(transitive, formerly proscribed, often in the phrase "substitute X with/by Y", sometimes "substitute X for Y") To use Y in place of X; to replace X with Y.
- I had to substitute old parts with the new ones.
Synonyms:

exchange
(transitive) To remove (a player) from the field of play and bring on another in his place.
- He was playing poorly and was substituted after twenty minutes
(intransitive) To serve as a replacement (for someone or something).
- Accumulation of wealth by this route may substitute for personal saving.1987, James Tobin, Essays in Economics, Vol. 2, page 75

subaudi (imperative only)

(imperative-only, obsolete) Mentally supply (something which has not been expressed); scilicet.
- the grass is always greener [subaudi on the other side of the fence] — other circumstances seem more desirable than one’s own, but in reality are often not
Synonyms:

subaudite

Adapted from Wiktionary: sub. (page history and authors); substitute (page history and authors); subaudi (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Cite this entry: “sub..” Word.ws, https://word.ws/sub.. Based on Wiktionary, CC BY-SA 4.0.