Is retrospect connotation?

A connotation is your emotions to a word. For example, murder. When we think of murder, we think of it as a bad thing, so it has a negative connotaion.

Language Connotation is the tone or emotional association that a word has. It can be negative or positive, but is usually something seen by the population in general. For example, "slim" and "bony"...

I would say negative.

It is a negative word. Meaning negative, dreary, sad, etc.

that doesnt make any sense