adv
aback
uh-BAK
Aback (adv) means used in the phrase "taken aback": caught by surprise, startled, or momentarily thrown off guard. Example: “She was taken aback by how blunt his comment was.”
adv
1
Used in the phrase "taken aback": caught by surprise, startled, or momentarily thrown off guard.
"She was taken aback by how blunt his comment was."
"I was a bit taken aback when he showed up uninvited."
How to use aback
Learner’s notesIn plain EnglishAlmost always seen today in the fixed phrase "taken aback", meaning surprised or startled.
Memory tip
You rarely use "aback" on its own in modern English — learn it as part of the set phrase "taken aback".
Trace the full origin ↓
Common pairings
taken aback
rather taken aback
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Word forms
- Plural
- abacks
Fill the gap
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She was taken _____ by how blunt his comment was.
Etymology
From Old English onbæc, literally "on back" — the sense of being pushed backward by surprise.
Synonyms
View more →Related words
Frequently asked questions
What does “aback” mean?
The word “aback” means used in the phrase "taken aback": caught by surprise, startled, or momentarily thrown off guard. In plain terms, almost always seen today in the fixed phrase "taken aback", meaning surprised or startled.
How do you pronounce “aback”?
“Aback” is pronounced uh-BAK (/əˈbæk/ in IPA).
How do you use “aback” in a sentence?
Here is “aback” used in a sentence: “She was taken aback by how blunt his comment was.”
What is another word for “aback”?
Words with a similar meaning to “aback” include unawares.
What part of speech is “aback”?
“Aback” is an adverb.
Where does the word “aback” come from?
The word “aback” comes from Old English. From Old English onbæc, literally "on back" — the sense of being pushed backward by surprise.
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