aussagen

based on: sagen

hat ausgesagt

sagte aus

Meanings

to testify

("aussagen (gegen)" - Testifying in court or with the police.)

to say something about someone, to

("etwas über jemanden aussagen" - NOT for people actually saying something about someone. It's for the idea of actions or behaviors or other features that "say" something about a person.)

Word Family

Root: *seku̯-

The original sense of the root was:

following, pursuing

If we think of this in a context of hunting, we can easily see why how this root evolved into the words to see (from following with eyes) and to say (telling what you see). The connection of “to say” is debated, though.

The original sense of following is well preserved in the Latin branch around *sequi (to follow) with words like sequence, sect or execute.

Also the words around social likely belong to this family.
Here’s an (incomplete) list of the relatives in English:

social, associate, society… (“followers, going together”)
sequence, sequel, second, sect, segue (“what follows”)
pursue, persecute, prosecute (“going/come after”, basically prefix versions of the Latin base verb)
execute (to follow through)
to see (“follow with eyes”)
to say (“tell what you see”)