Definition of Back (meaning 1 of 3 — adjective)
Quick Meaning of Back
At the rear end or opposite side from the front of something.
Detailed Definition of Back
Located at, toward, or forming the rear or back part.
How to Pronounce Back
Stress pattern: O (1-syllable word).
Tip: Same as adverb form: /bæk/ with short /æ/ vowel, not /ɑː/.
Watch out: May be mispronounced with /ɑː/ instead of /æ/.
Other Meanings of Back
“Back” has 3 distinct meanings in English. You’re viewing meaning #1; here are the other 2:
#2 Back as an adverb
Going in the direction where you came from, or returning to how things were before.
come back
#3 Back as a noun
The part of your body behind you, opposite your front or face.
lower back
Origin and Etymology of Back
From Old English bæc, Germanic origin.
How to Use Back in a Sentence
Each example shows “back” in the meaning “At the rear end or opposite side from…”, with a CEFR level so learners can pick examples that match their fluency.
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“The back door is locked.”
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“I sat in the back row at the cinema.”
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“The back garden has a small shed.”
Synonyms and Antonyms of Back
Common Synonyms for Back
Smart Synonyms for Back — When to Use Each
- rear
- formal, used in descriptions of vehicles
- hind
- literary or zoological, as in hind legs
Antonyms of Back
Common Collocations with Back
These phrases pair with “back” in everyday English:
- back door
- back seat
- back row
- back garden
- back window
Common Mistakes When Using Back
Even fluent speakers slip up with “back”. Here’s how to avoid the most common errors:
- ✗ Wrong: She sat on the back of the car.
- ✓ Correct: She sat in the back of the car.
- Why: Use 'in the back' for inside position; 'on the back' means physically on top.
- ✗ Wrong: The back door from the house is open.
- ✓ Correct: The back door of the house is open.
- Why: Use 'of' with 'door of the house', not 'from'.
Words Confused With Back
- Back vs Behind: behind indicates position relative to something; back describes position at the rear end Compare →
Frequently Asked Questions About Back
What is the meaning of "Back"?
At the rear end or opposite side from the front of something.
How do you pronounce "Back"?
The IPA is /bæk/. Same as adverb form: /bæk/ with short /æ/ vowel, not /ɑː/.
What part of speech is "Back"?
"Back" is an adjective at A1 level (Common European Framework).
What are synonyms for "Back"?
Common synonyms include rear, posterior, hind.
How do you use "Back" in a sentence?
For example: "The back door is locked."