dwell on
Definitions
To think or speak about something for a long period of time, especially something unpleasant.
To linger over or focus one's attention on a particular subject or thought.
Examples
It is not healthy to dwell on past mistakes for too long.
She tried not to dwell on the negative comments she received during the meeting.
There is no point in dwelling on what might have been if you had made a different choice.
Synonyms
brood over obsess over ruminate on linger on ponder mull over meditate on
Antonyms
dismiss ignore forget overlook disregard brush aside shrug off