Hell’s teeth Definition 1 of 1Pro Tip 1/3Expressive Strength Used for strong emotions or reactions, more intense than 'Oh no!' or 'Wow!' Hell’s teeth, I've never seen a dog that big! Pro Tip 2/3Casual Speech Fits informal conversations among friends or in casual settings, not in formal situations. Hell’s teeth, this traffic jam is never-ending! Pro Tip 3/3Culture Specific Mainly used in the UK and can color your English with a British flavor. Hell’s teeth, did she really say that in the meeting?