10th dentist.
10th dentist: person who holds an unpopular opinion.
What does 10th dentist mean?
For “10th dentist”, this entry covers the following meaning: person who holds an unpopular opinion.
See how it lands.
Original examples written for this entry, not quotations from the sources.
During the heated debate, I called him a 10th dentist when he stubbornly defended his fringe theory despite overwhelming evidence.
The chat moderator labeled the outspoken participant a 10th dentist after she refused to accept the majority's consensus on the policy change.
The right word.
The right moment.
Choose this wording when the meaning above fits what you intend to say. Give the reader enough surrounding context to follow the example; if clarity matters more than the shorthand, use the plain-English wording instead.
Avoid assuming that a label reveals somebody’s motives or private behavior. If you are unsure how your words will be understood, explain the situation directly and ask a clarifying question rather than relying on the expression alone.
Not quite the same as…
Other readings
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A little backstory.
This automated entry does not establish a first coinage. Consult the linked references for documented history.
Still wondering?
How can I check whether this meaning of “10th dentist” fits?
Substitute the plain-English meaning into the entire sentence, as in the examples. Keep the surrounding situation in view. If the result does not make sense, ask for clarification rather than assuming this is the intended reading.
How can I make my own message clearer?
Add the missing context or choose a direct description of what you mean. Read the whole message back before sending it, especially if another person could take the label differently.
Sources & checks
Meaning and factual notes are informed by the references below. Examples and usage advice are original editorial writing. A source documents use; it does not measure current popularity.
- 10th dentist — English entry, revision 91555531 ↗Wiktionary contributors · checked 20 Oct 2026Supports: summary; meaning; partOfSpeech
Is “10th dentist” safe for school or work — and how do you reply?
General-audience informal vocabulary (SFW): “10th dentist” is a general-audience expression (informal) included in our 100% SFW ESL Classroom Kit. It fits casual group chats and informal conversation, but should be translated into standard English in formal client or academic writing (translate with the Corporate ↔ Gen Z tool ↗).
How to reply when someone uses “10th dentist” in a chat: Match the speaker’s register (informal). If they are joking or exaggerating, a brief acknowledgment (such as bet, no cap, or grand) fits; if the message is in a professional channel, reply in plain English: “During the heated debate, I called him a person who holds an unpopular opinion when he stubbornly defended his fringe theory despite overwhelming evidence.”.
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Compare usage: 10th dentist vs. ate ↗ · 10th dentist vs. aura ↗ · 10th dentist vs. aura farming ↗
Academic & press citation
SlangLane Editorial & Linguistics Lab. (2026). “10th dentist” — SlangLane Open Reference Corpus (Release daily-2026-10-22-expansion). CERN Zenodo. https://doi.org/10.5281/zenodo.23541347 · Canonical URL: https://slanglane.com/terms/10th-dentist · All PDF working papers ↗