1. phrasal verb
If someone dredges up a piece of information they learned a long time ago, or if they dredge up a distant memory, they manage to remember it.
[V P n] ⇒ ...an American trying to dredge up some French or German learned in high school.
[V P n (not pron)] ⇒ The fragments of memory she dredges up do not fit together. [Also V n P]
2. phrasal verb
→ dredge If someone dredges up a damaging or upsetting fact about your past, they remind you of it or tell other people about it.
[V P n] ⇒ I wouldn't want to dredge up the past.
[V n P] ⇒ It's the media who keep dredging it up.
COBUILD Advanced English Dictionary. Copyright © HarperCollins Publishers