dredge up

bring up something unpleasant from the past that people would rather forget

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What does "dredge sth up" mean?

To dredge up something is to bring back an unpleasant, embarrassing, or painful piece of the past — particularly when it would have been better left forgotten. The metaphor comes from dredging a riverbed, dragging unwanted sediment up from the depths, which captures both the effort involved and the sense that whatever is being retrieved was submerged for a reason. The verb almost always carries a critical or disapproving tone: either the speaker is condemning someone for reviving something painful, or framing the act itself as unnecessary or harmful. You will encounter it in heated arguments ('Why do you always have to dredge up the past?'), in political journalism ('Opponents dredged up allegations from a decade ago'), and in reflective contexts such as memoirs or legal proceedings. It is almost never used positively — if someone is dredging something up, the implication is that it should have stayed buried.

Examples

How to use it

dredge up + unpleasant thing

The most common pattern: the object follows the particle and is typically a noun phrase referring to something painful, embarrassing, or long-forgotten.

His opponents dredged up old scandals from his time in local government.

dredge + pronoun + up

When the object is a pronoun, it must go between the verb and the particle.

We had finally moved on from that argument — I don't know why she had to dredge it up again.

dredge + short definite object + up

Short, definite noun phrases can be placed between the verb and the particle, though this is less common than keeping the object after 'up'.

Every time they disagreed, he would dredge the past up as ammunition.

unpleasant thing + be dredged up

The passive is natural and common, especially in journalistic contexts where the focus is on what has been exposed rather than who exposed it.

Embarrassing details from the CEO's early career were dredged up by a rival publication.

dredge up + wh-clause / what + happened

Used when the speaker refers to a past event more loosely, without naming it precisely.

There's no point dredging up what happened between them three years ago.

Common Collocations

old scandalpainful memoriespast mistakesold grievanceslong-buried secretsembarrassing details

Common Mistakes

Using it in neutral or positive contexts

'Dredge up' almost always implies that the thing being revived is unpleasant, unwelcome, and better left forgotten. Using it to describe the neutral or positive retrieval of information makes the sentence feel unnatural or unintentionally critical.

✗ The researcher dredged up fascinating evidence that supported the theory.
✓ The researcher dug up fascinating evidence that supported the theory.
Confusing 'dredge up' with 'bring up'

'Bring up' is neutral — it simply means to mention something in conversation. 'Dredge up' always implies the content is unpleasant and that reviving it is unnecessary or harmful. Swapping them loses that critical edge.

✗ She brought up the old scandal to warn others about his behaviour.
✓ She dredged up the old scandal to undermine his campaign. (or: She brought up his past behaviour as a warning.)
Placing a long noun phrase between verb and particle

Separating 'dredge' from 'up' works naturally only with short objects or pronouns. Long or complex noun phrases sound awkward in the middle and should follow 'up' instead.

✗ The journalist dredged a decades-old controversy involving the former minister up.
✓ The journalist dredged up a decades-old controversy involving the former minister.

Usage

This phrasal verb is neutral in register and works in both spoken and written English, from journalistic articles to everyday arguments. It is especially common in British English media and political commentary.

Frequently Asked Questions

Does 'dredge up' always have a negative tone?

Yes, almost without exception. The verb implies that whatever is being revived was buried for a reason — it is unpleasant, embarrassing, or painful — and that bringing it back is unnecessary or harmful. If you want to describe uncovering information in a neutral or investigative way, 'dig up' or 'uncover' would be more appropriate.

What kinds of things can you 'dredge up'?

Typically abstract nouns connected to the past: old scandals, painful memories, past mistakes, long-buried secrets, old grievances, embarrassing details, or dormant controversies. The object is almost always something that was forgotten, hidden, or deliberately set aside — never something current or positive.

Can 'dredge up' be used in the passive, and does it sound natural?

Yes, the passive is very natural — especially in journalistic and political writing, where the emphasis falls on what has been exposed rather than who exposed it. 'Old allegations were dredged up just before the election' is a typical example of how it appears in media contexts.

Is 'dredge up' more common in British or American English?

It is used in both, but it appears particularly frequently in British media and political commentary. The closely related phrase 'rake up' — which has a nearly identical meaning — is even more distinctly British, so if you encounter 'rake up' it is likely a British source.

Is there a literal meaning of 'dredge' I should know about?

Yes — to dredge literally means to drag or scoop material from the bottom of a body of water, such as a harbour or river. 'Dredge up' as a phrasal verb is metaphorical, drawing on the image of hauling unwanted sediment up from the depths. The two uses are quite distinct, so context will always make it clear which is meant.

Related Phrasal Verbs

dig sth up

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