Definition of Knob
Quick Meaning of Knob
A round handle or button you turn to control something; a small rounded lump on something
Detailed Definition of Knob
A rounded handle or control on a device; a rounded protuberance or lump on a surface; a small ball-shaped ornament
How to Pronounce Knob
Stress pattern: o (1-syllable word).
Tip: Pronounced /nɒb/ with short 'o' sound
Watch out: Check IPA: /nɒb/
Origin and Etymology of Knob
From Old English 'cnotta' (knot). Originally meant a knob or knot in wood; extended to round handles and buttons.
How to Use Knob in a Sentence
Each example shows “knob” with a CEFR level so learners can pick examples that match their fluency.
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“Turn the knob to adjust the volume on the radio.”
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“The wooden door had a brass knob that shone brightly.”
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“She twisted the temperature knob on the heater.”
Synonyms and Antonyms of Knob
Common Synonyms for Knob
Smart Synonyms for Knob — When to Use Each
- handle
- Part designed to be grasped or held
- dial
- Round face with numbers or markings
Common Collocations with Knob
These phrases pair with “knob” in everyday English:
- door knob
- control knob
- volume knob
- turn a knob
- brass knob
Common Mistakes When Using Knob
Even fluent speakers slip up with “knob”. Here’s how to avoid the most common errors:
- ✗ Wrong: Turn the knobs for adjust the temperature
- ✓ Correct: Turn the knob to adjust the temperature
- Why: Use infinitive 'to adjust'; usually singular knob
- ✗ Wrong: The knobs are making strange sounds
- ✓ Correct: The knob is making a strange sound
- Why: A knob does not 'make sounds' unless worn or broken
- ✗ Wrong: She pushed the knob on the door
- ✓ Correct: She turned the knob on the door
- Why: Knobs are 'turned' not 'pushed'
Other Forms of Knob
- Noun: knob
Frequently Asked Questions About Knob
What is the meaning of "Knob"?
A round handle or button you turn to control something; a small rounded lump on something
How do you pronounce "Knob"?
The IPA is /nɒb/. Pronounced /nɒb/ with short 'o' sound
What part of speech is "Knob"?
"Knob" is a noun at B2 level (Common European Framework).
What are synonyms for "Knob"?
Common synonyms include handle, button, dial.
How do you use "Knob" in a sentence?
For example: "Turn the knob to adjust the volume on the radio."