dwell on

verb

1. (intr, preposition) to think, speak, or write at length

   it's no good dwelling on your misfortunes

Idioms and Phrases

Also, dwell upon. Linger over; ponder, speak or write at length. For example, Let's not dwell on this topic too long; we have a lot to cover today. [c. 1500]

Related Words

• emphasize 
• harp on