General:
* Brief
* Concise
* Curtailed
* Diminished
* Little
* Minor
* Petite
* Small
* Tiny
* Wee
Size/Length:
* Brief
* Compact
* Constrained
* Limited
* Miniature
* Narrow
* Petite
* Stunted
Duration/Time:
* Abbreviated
* Ephemeral
* Fleeting
* Momentary
* Rapid
* Transient
Height:
* Dwarfed
* Low
* Petite
* Small
* Stunted
Other:
* Abridged
* Condense
* Curtailed
* Diminished
* Lacking
* Scarce
Figurative:
* Abrupt
* Curt
* Snappy
* Sudden
Informal:
* Brief
* Little
* Shorty (for people)
* Tiny
Please provide me with more context, and I can give you even more specific synonyms! For example, are you talking about short in terms of length, time, height, or something else entirely?