mastiff
UK[ˈmæstɪf]US[ˈmæstɪf]
n
A large, strong dog with a short coat, powerful jaws, and a calm but protective nature.
Etymology
The word 'mastiff' entered English in the 14th century from the Old French 'mastin', meaning a domestic dog or watchdog. This Old French term likely derived from the Vulgar Latin 'mansuetinus', meaning 'tame' or 'domesticated', which itself originates from the Latin 'mansuetus', the past participle of 'mansuescere' ('to tame'). The semantic journey is from the concept of a tamed animal to a specific, powerful breed of dog kept for guarding property. The modern spelling with '-iff' was influenced by an unrelated Old French word 'mestif' (meaning mongrel), creating the hybrid form we use today to denote this distinct breed.
Analysis
The word 'mastiff' functions as a simplex unit in modern English. It is a loanword whose components are not productively separable within the current spelling.
Examples
The farmer kept a loyal mastiff to guard the livestock at night.
Despite their imposing size, well-trained mastiffs are known for their gentle demeanor with family.
The ancient Romans may have used mastiff-like dogs in warfare and for hunting.