Ég efa það.

I doubt it.

Breakdown of Ég efa það.

• ég: I
• það: it
• efa: to doubt

Questions & Answers about Ég efa það.

What does each word in Ég efa það mean?

• Ég = I
• efa = doubt
• það = it / that

So grammatically, this is a very straightforward subject + verb + object sentence.

Why is the verb efa here?

Because efa is the present tense, first-person singular form of the verb að efa = to doubt.

So:

• að efa = to doubt (infinitive)
• ég efa = I doubt

Even though English sometimes changes the verb form very little, Icelandic has its own conjugation patterns, and this is simply the correct form used with ég here.

Is það supposed to mean it or that?

It can be either, depending on context.

In Icelandic, það is used for both:

• it
• that

In a short sentence like Ég efa það, English usually translates it as I doubt it, but the Icelandic word itself can also correspond to that in other contexts.

What case is það in here?