Brat is a short form of the forename Bartholomew. There are two main types of such shortenings: they are convenient for writing, e.g. in lists; or they are essentially spoken pet-names, and thus informal. (See Conventional abbreviations for forenames.)
|Short form||Long form||Informal or written||Other short forms||Remarks|
- Note that any informal form may be spelled in different ways. Notably, any spelling listed that ends in '-ie' may be written with the ending '-y', and vice versa.
- There are four common nouns brat, three of which are obsolete. The fourth means 'a child' - with connotations of 'badly behaved' or 'ill brought up'. The phrase 'spoiled brat' is not uncommon, meaning 'an over-indulged child', one whose parents allow too much licence and who consequently behaves in a way not acceptable to others. The connotations used to be of insignificance: the phrase quoted in OED is 'a beggar's brat' - a person of no account. The origin of brat in this sense is lost.