A mastiff is a very large, powerfulhaving a lot of strength and physical force dog breed. Mastiffs are known for their strong build and are often kept as guardused for protecting property, people, or places dogs or watchdogsdogs trained to watch and warn about danger.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-28. AI assessment; not a guarantee of accuracy.
Pronunciation
AI-generated pronunciation audio (OpenAI).
Accent: General American English
IPA: /ˈmæstɪf/
Easy pronunciation: MAS-tif (approximate spelling).
Stress: Stress the first syllable.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-28. AI assessment; not a guarantee of accuracy.
Mastiff Meaning
a very large, strong dog breed often used for guarding
Part of speech: noun
Definition: an old breed of powerful, deep-chested, smooth-coated dog used chiefly as a watchdog and guard dog
Example: The family’s mastiff stood quietly by the gate.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-28. AI assessment; not a guarantee of accuracy.
Common Mistakes
- Mastiff is a dog breed, not a general word for any big dog.
- It should not be used as a synonym for guard dog unless you mean the breed specifically.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-28. AI assessment; not a guarantee of accuracy.
Frequently Asked Questions
What does mastiff mean?
A mastiff is a large, powerful dog breed that has traditionally been used for guarding and watching property.
What part of speech is mastiff?
Mastiff is a noun.
What are synonyms for mastiff?
There are no strong general synonyms for mastiff in everyday use, because it names a specific dog breed.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-28. AI assessment; not a guarantee of accuracy.
