sigher / sire are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
sigher: NA
sire: (noun) a title of address formerly used for a man of rank and authority. (noun) male parent of an animal especially a domestic animal such as a horse.
sigher: NA
sire: s·AY·er
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)