Glöð (Happy)
This word is used to express general happiness or contentment. It can describe a person’s mood or the essence of a pleasant experience.
Ég er svo glöð að sjá þig! (I am so happy to see you!)

Sorgmæddur (Sad)
To convey a feeling of sadness or distress, ‘sorgmæddur’ for males and ‘sorgmædd’ for females can be used. It describes an emotional state of unhappiness.
Hann er sorgmæddur eftir að hafa misst vinnuna. (He is sad after losing his job.)

Reiður (Angry)
‘Angry’ in Icelandic, ‘reiður’ describes someone who is upset or furious about something. This emotion can range from mild irritation to intense anger.
Af hverju ert þú svona reiður? (Why are you so angry?)

Óttasleginn (Scared)
When feeling fear or terror, ‘óttasleginn’ (masculine) or ‘óttaslegin’ (feminine) is used to describe someone who is scared or frightened.
Ég er alveg óttasleginn við þessar aðstæður. (I am totally scared of these circumstances.)

Ástfanginn (In Love)
To express the romantic emotional state of being in love, ‘ástfanginn’ (masculine) or ‘ástfangin’ (feminine) is used.
Þau eru svo ástfangin. (They are so in love.)

Spennuþrunginn (Excited)
This expresses a state of excitement or anticipation. It can be used when looking forward to something with enthusiasm.
Ég er spennuþrunginn fyrir ferðalagið. (I am excited for the trip.)

Áhyggjufullur (Worried)
To express a feeling of concern or anxiety, ‘áhyggjufullur’ denotes that someone is worried about an issue or situation.
Af hverju ert þú svona áhyggjufullur? (Why are you so worried?)

Þakklátur (Grateful)
Feeling or expressing gratitude is described by ‘þakklátur’ for males and ‘þakklát’ for females.
Ég er svo þakklátur fyrir hjálpina þína. (I am so grateful for your help.)

Leiður (Sorry)
When one feels regret or wants to apologize, ‘leiður’ conveys the sense of feeling sorry or apologetic.
Ég er virkilega leiður að hafa sagt það. (I am really sorry to have said that.)

Hamingjusamur (Joyful)
This word expresses a profound state of joy or happiness. It conveys a deep satisfaction or bliss.
Hún er svo hamingjusöm með nýja barnið. (She is so joyful with the new baby.)

By mastering these emotional expressions, you can communicate more effectively in Icelandic and better understand the emotional context when conversing with native speakers. Emotions are a fundamental part of human interaction, and having the vocabulary to express them in a new language is a significant step in becoming fluent. Keep practicing, and you’ll soon be expressing your emotions like a native Icelandic speaker!