"This" in the accusative (þennan, þessa, þetta)

Just as nouns change their form when they become the direct object of a sentence (the accusative case), the demonstrative pronoun for "this" changes to match their gender.

Gender"This" (Accusative)
Masculineþennan
Feminineþessa
Neuterþetta

When placing "this" directly before a noun, the noun drops its "the" ending, taking its indefinite form.

For masculine direct objects:

I am going to choose this dress.
Ég ætla að velja þennan kjól.

For feminine direct objects:

She is trying on this coat.
Hún er að máta þessa kápu.

For neuter direct objects, the accusative form is identical to the nominative:

Do you want to buy this vest?
Vilt þú kaupa þetta vesti?

When a sentence has multiple direct objects, make sure to match the form of "this" to each individual noun:

Do you see this dress or this scarf?
Sérð þú þennan kjól eða þennan trefil?
They want this bracelet and this vest.
Þau vilja þetta armband og þetta vesti.