Þetta tryggir góðan árangur.

Þetta is the neuter singular form of þessi (this).

In Icelandic, þessi changes form depending on gender, number, and case. Here, þetta is being used on its own as the subject, meaning this.

A very rough set of nominative singular forms is:

• þessi — masculine
• þessi — feminine
• þetta — neuter

So in Þetta tryggir góðan árangur, þetta means this and functions as the subject of the sentence.

Tryggir is the present tense, 3rd person singular form of the verb að tryggja, meaning to ensure, to secure, or to guarantee.

It is 3rd person singular because the subject is þetta (this), which takes a singular verb.

So:

• að tryggja — to ensure
• ég tryggi — I ensure
• þú tryggir — you ensure
• það/þetta tryggir — it/this ensures

In this sentence, Þetta tryggir ... = This ensures ...

Because árangur is the direct object of the verb tryggir, it appears in the accusative case.

The verb að tryggja normally takes an object in the accusative. So:

• nominative: góður árangur — good success / a good result
• accusative: góðan árangur

The adjective also has to agree with the noun in gender, number, and case:

• árangur is masculine singular
• as a direct object here, it is accusative singular
• so the adjective becomes góðan

That is why the sentence has góðan árangur.

It is in the accusative singular.

You can tell from both the function and the form:

1. Function:
   Árangur is what is being ensured, so it is the direct object.

2. Verb pattern:
   The verb að tryggja usually takes an accusative object.

3. Adjective clue:
   The adjective góðan is clearly a masculine accusative singular form, which tells you the noun phrase is accusative.

So the full object phrase is:

• góðan árangur = good success / good results / a good outcome

Icelandic does not have a separate indefinite article like English a/an.

So a noun by itself can mean:

• árangur — success, a success, result, or an outcome, depending on context

That means góðan árangur can naturally mean:

• good success
• a good result
• good results/outcomes

The exact English wording depends on the context, but Icelandic does not need a separate word for a/an.

Icelandic usually expresses the by attaching it to the end of the noun, rather than using a separate word.

For example:

• árangur — success / a result
• árangurinn — the success / the result

In your sentence, árangur is indefinite, so there is no definite ending.

So:

• góðan árangur — good success / a good result
• góðan árangurinn would not be the normal form
• instead you would say something like góðan árangurinn only in very unusual or incorrect usage

If you wanted the good result, the structure would have to be handled differently, for example with a definite noun phrase like góða árangurinn in the appropriate context and case.

The basic word order is:

Subject + Verb + Object

• Þetta — subject
• tryggir — verb
• góðan árangur — object

So it follows a very familiar pattern for English speakers:

• This ensures good results.

That said, Icelandic word order can be more flexible than English because case endings help show grammatical roles. But this sentence uses a very straightforward neutral order.

A helpful approximate pronunciation is:

THET-ta TRIG-gir GOH-than AU-rang-ur

A few important points:

• Þ is like th in thing
• ð is like th in this, though in some positions it can sound weaker
• tt in þetta is pronounced differently from English tt and can sound a bit like ht to learners, depending on accent and how narrowly you listen
• y in tryggir is not like English y; it is closer to an Icelandic vowel sound similar to i
• au in árangur does not sound like English aw exactly; Icelandic vowels have their own values

If you want a learner-friendly breakdown:

• Þetta ≈ THET-ta
• tryggir ≈ TRIG-gir
• góðan ≈ GOH-than
• árangur ≈ AU-rang-ur

It can be translated in several ways depending on context.

Árangur often means:

• success
• result
• outcome
• achievement

So Þetta tryggir góðan árangur could be translated as:

• This ensures good results.
• This ensures a good outcome.
• This ensures success.

The best English choice depends on what þetta refers to. If it is about a method, process, or habit, English often prefers good results or a good outcome.

In Icelandic, adjectives usually come before the noun they describe, just as in English.

So:

• góður árangur — good success / a good result
• góðan árangur — good success / a good result, but in the accusative

The main difference from English is not the position, but the fact that the adjective changes form to match the noun’s:

• gender
• number
• case
• definiteness

That is why you see góðan here instead of just one fixed form like English good.

Yes. Very often þetta refers not to a concrete object, but to:

• something just mentioned
• an action
• a method
• a situation
• a general idea

For example, after describing a study technique, diet, or training method, you could say:

• Þetta tryggir góðan árangur.

In that kind of context, þetta means something like:

• this
• this approach
• this method
• this will ensure good results

So þetta is often broader than just this thing.

Yes. That would mean This will ensure good results.

Compare:

• Þetta tryggir góðan árangur. — This ensures good results.
• Þetta mun tryggja góðan árangur. — This will ensure good results.

The original sentence is in the present tense, but present tense can sometimes sound quite natural in English and Icelandic for general truths or confident statements. Adding mun makes the future meaning more explicit.

Three things are especially important:

1. Case

   • English does not mark nouns and adjectives this way very much.
   • Icelandic does.
   • góðan árangur is accusative because it is the direct object.

2. Adjective agreement

   • English good never changes form.
   • Icelandic góður changes depending on gender, number, and case.
   • Here it becomes góðan.

3. Demonstrative forms

   • English just has this.
   • Icelandic has forms like þessi and þetta, which change depending on grammar.

So this short sentence is a very good example of how Icelandic packs grammatical information into word endings.