Wir raten leise.

With wir (we), the present-tense verb form is often the same as the infinitive in German.

For raten:

• ich rate
• du rätst
• er/sie/es rät
• wir raten
• ihr ratet
• sie/Sie raten

So Wir raten is the correct form for we guess / we advise, depending on the meaning already given to you.

Wir means we.

It is in the nominative case because it is the subject of the sentence — the people doing the action.

So in Wir raten leise:

• wir = the subject
• raten = the verb
• leise = describes how the action happens

Here, leise is an adverb. It tells you how the action is done: quietly or softly.

It is not describing a noun, so it does not take an adjective ending.

Compare:

• Wir raten leise. = leise describes the verb → adverb
• eine leise Stimme = leise describes the noun Stimme → adjective

Because it is being used as an adverb, not as an adjective before a noun.

German adjectives usually get endings when they come before nouns:

• eine leise Stimme
• der leise Ton

But adverbs do not get those endings:

• Sie spricht leise.
• Wir raten leise.

So the plain form leise is exactly what you want here.

Yes. This is a very normal German main-clause word order:

• Wir = position 1
• raten = position 2
• leise = later in the sentence

German main clauses usually put the finite verb in second position.

So this sentence follows the standard pattern: Subject + verb + other information

You could also move leise to the front for emphasis:

• Leise raten wir.

That is grammatical, but Wir raten leise is the most neutral version.

Yes. Raten is one of those verbs that changes its stem vowel in the 2nd and 3rd person singular of the present tense.

So you get:

• ich rate
• du rätst
• er/sie/es rät
• wir raten
• ihr ratet
• sie/Sie raten

That means the sentence uses the regular-looking wir form, but other forms may look different.

Yes. Raten is a verb with more than one common meaning in German. Depending on context, it can mean things like:

• to guess
• to advise

Since you said the meaning has already been shown to the learner, you should follow that intended meaning here. But it is completely normal for learners to notice that raten can be ambiguous without context.

Not necessarily.

If the intended meaning is something like guess, the verb can stand on its own:

• Wir raten.
• Wir raten leise.

If the meaning is advise, German often adds more information, for example:

• Wir raten dir. = We advise you.
• Wir raten dazu. = We advise that / We recommend it.

So whether an object is needed depends on the meaning and context.

A simple learner-friendly guide would be:

• wir ≈ veer
• raten ≈ RAH-ten
• leise ≈ LYE-zuh

A few pronunciation notes:

• w in German sounds like English v
• raten has a long a
• ei in leise sounds like English eye
• the s in leise sounds like z

Not usually in the same way.

Leise means quietly / softly, especially for sound or voice level.

Still usually means still, silent, or motionless, and it often has a slightly different feel.

So:

• Wir raten leise. = We are guessing/advising quietly, in a low voice.
• Wir sind still. = We are silent / quiet.

For this sentence, leise is the natural choice if you want to describe the manner of speaking or sounding quiet.