# 10th dentist

10th dentist: person who holds an unpopular opinion.

Canonical URL: https://slanglane.com/terms/10th-dentist
Release: daily-2026-10-22-expansion
Checked: 2026-10-20T12:00:25.944Z
Register: informal
Language: general
Review: automated-evidence-review

## Meaning

For “10th dentist”, this entry covers the following meaning: person who holds an unpopular opinion.

## Original examples

> During the heated debate, I called him a 10th dentist when he stubbornly defended his fringe theory despite overwhelming evidence.

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.

Context: An original, invented situation. Compare the expression with the plain-English substitution below it; the people and events are illustrative.

> The chat moderator labeled the outspoken participant a 10th dentist after she refused to accept the majority's consensus on the policy change.

In plain English: The chat moderator labeled the outspoken participant a person who holds an unpopular opinion after she refused to accept the majority's consensus on the policy change.

Context: An original, invented situation. Compare the expression with the plain-English substitution below it; the people and events are illustrative.

## When it fits

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.

## Mind the context

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.

## Important differences

### Other readings

Check the whole sentence before choosing a reading. This entry explains one checked sense; when that reading does not fit, ask the writer what they meant instead of forcing the definition onto the conversation.

## Backstory

This automated entry does not establish a first coinage. Consult the linked references for documented history.

## Questions

### 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

- [10th dentist — English entry, revision 91555531](https://en.wiktionary.org/w/index.php?title=10th%20dentist&oldid=91555531) — Wiktionary contributors. Checked 2026-10-20T12:00:25.944Z. Supports: summary; meaning; partOfSpeech.

Source texts retain their original licenses. Definitions and factual notes are research-informed; examples and usage advice are original SlangLane writing.