Scottish Gaelic terms categorized by their etymologies.

• Category:Scottish Gaelic apocopic forms: Scottish Gaelic words that underwent apocope, thus their origin involved a loss or omission of a sound or syllable(s) from their end.
• Category:Scottish Gaelic back-formations: Scottish Gaelic terms formed by reversing a supposed regular formation, removing part of an older term.
• Category:Scottish Gaelic borrowed terms: Scottish Gaelic terms that are loanwords, i.e. terms that were directly incorporated from another language.
• Category:Scottish Gaelic calques: Scottish Gaelic calques, i.e. terms formed by piece-by-piece translations of terms from other languages.
• Category:Scottish Gaelic compound terms: Scottish Gaelic terms composed of two or more stems.
• Category:Scottish Gaelic doublets: Scottish Gaelic terms that trace their etymology from ultimately the same source as other terms in the same language, but by different routes, and often with subtly or substantially different meanings.
• Category:Scottish Gaelic ellipses: Scottish Gaelic terms that are shortened versions of longer expressions.
• Category:Scottish Gaelic eponyms: Scottish Gaelic terms derived from names of real or fictitious people.
• Category:Scottish Gaelic inherited terms: Scottish Gaelic terms that were inherited from an earlier stage of the language.
• Category:Scottish Gaelic terms by interfix: Scottish Gaelic terms categorized by their interfixes.
• Category:Scottish Gaelic onomatopoeias: Scottish Gaelic terms that were coined to sound like what they represent.
• Category:Scottish Gaelic partial calques: Scottish Gaelic partial calques, i.e. terms formed partly by piece-by-piece translations of terms from other languages and partly by direct borrowing.
• Category:Scottish Gaelic terms by prefix: Scottish Gaelic terms categorized by their prefixes.
• Category:Scottish Gaelic semantic loans: Scottish Gaelic semantic loans, i.e. terms one or more of whose definitions was borrowed from a term in another language.
• Category:Scottish Gaelic terms by suffix: Scottish Gaelic terms categorized by their suffixes.
• Category:Scottish Gaelic syncopic forms: Scottish Gaelic words that underwent syncope, thus their origin involved a loss or omission of a sound or syllable from their interior.
• Category:Scottish Gaelic terms derived from other languages: Scottish Gaelic terms that originate from other languages.
• Category:Scottish Gaelic univerbations: Scottish Gaelic terms that result from the agglutination of two or more words.
• Category:Scottish Gaelic terms with unknown etymologies: Scottish Gaelic terms whose etymologies have not yet been established.