Forngripurinn er gamall.

It can be split into two parts:

• forngripur = artifact / relic / antique
• -inn = the definite article, meaning the

So forngripurinn means the artifact / the relic / the antique.

You can also see forngripur as built from older elements meaning something like ancient object.

In Icelandic, the is usually added to the end of the noun instead of standing as a separate word.

So:

• forngripur = an artifact / artifact
• forngripurinn = the artifact

This attached article is extremely common in Icelandic and is one of the first big differences English speakers notice.

Here it is:

• gender: masculine
• number: singular
• case: nominative

It is nominative because it is the subject of the sentence: The artifact is old.

That matters because adjectives in Icelandic must agree with the noun in gender, number, and case.

Er means is.

It is the present tense, third-person singular form of the verb vera (to be).

So:

• ég er = I am
• þú ert = you are
• hann / hún / það er = he / she / it is

In this sentence, Forngripurinn er gamall, it simply links the subject and the description, just like English is.

Because gamall is the form that agrees with a masculine singular nominative noun.

Since forngripurinn is masculine singular nominative, the adjective must match it.

Compare:

• masculine: gamall
• feminine: gömul
• neuter: gamalt

So if the noun were neuter, you would not use gamall.

This is a very common question.

In Forngripurinn er gamall, the adjective comes after the verb er and describes the noun predicatively. In that position, Icelandic normally uses the strong adjective form, here gamall.

But when the adjective comes before a definite noun, Icelandic usually uses the weak form:

• gamli forngripurinn = the old artifact

So:

• Forngripurinn er gamall = The artifact is old
• gamli forngripurinn = the old artifact

Same basic idea, but different grammar, so the adjective changes form.

Yes. This is the neutral, ordinary word order:

• Forngripurinn = subject
• er = verb
• gamall = predicate adjective

So it follows the usual pattern subject + verb + description.

You can sometimes change the order for emphasis or in more literary style, but Forngripurinn er gamall is the most straightforward and natural version.

A natural plural version would be:

Forngripirnir eru gamlir.
= The artifacts are old.

Changes:

• forngripurinn → forngripirnir
• er → eru
• gamall → gamlir

This shows how both the noun and the adjective change for number, and the verb changes too.

Yes, forngripur already suggests an ancient object, artifact, or relic, so the idea of age is partly built in.

That means Forngripurinn er gamall can feel a little obvious if translated very literally, like saying The antique is old.

But it is still grammatically fine. In real language, people often say things that are slightly redundant for emphasis, clarity, or style. So the sentence works well as a grammar example.

You would say:

gamli forngripurinn

That is different from Forngripurinn er gamall.

Compare:

• gamli forngripurinn = the old artifact
• Forngripurinn er gamall = The artifact is old

This is an important distinction in Icelandic:

• adjective before the noun: often weak form, such as gamli
• adjective after er: strong form, such as gamall