This is the 13th most frequent Icelandic word.
segir
"Segir" means "says" in English.
Here, 'segir' is the present tense, third person singular form of the verb 'að segja', which means 'to say' or 'to tell'. It is used to convey reported speech.
Hún segir að hún komi í kvöld.
She says that she will come tonight.
In this sentence, 'segir' is used as an imperative in indirect discourse, expressing an instruction given to others.
Kennarinn segir þeim að hlusta vel.
The teacher tells them to listen carefully.
'Segir' here indicates a habitual action, showing how the word is used to express general truths or ongoing actions.