Using 'dredge up' often implies negative feelings about the subject being revived.

Negative Emotion

Be cautious when using 'dredge up' as it can make people uncomfortable by reminding them of bad experiences.

Sensitive Topics

'Dredge up' indicates something is being revisited, so avoid using it with words like 'again' or 're-' which are redundant.

'Dredge up' suggests uncovering something hidden or lost, like finding a treasure.

The term is often used in contexts of investigative work, where effort is needed to find information.

Using 'dredge up' implies that effort was made to find or recall something, not that it was easy.