Mindenképpen holnap indulunk.

Mindenképpen means definitely, in any case, no matter what, or by all means, depending on context.

In this sentence, it means something like we are definitely leaving tomorrow.

A useful warning: it does not mean always.
For always, Hungarian uses mindig.

Yes. Mindenképpen is written as one word.

It is built from older elements that originally had a more literal sense, but for learners it is best to treat it as a fixed adverb meaning definitely / in any case.

Hungarian very often uses the present tense to talk about the future when the time is already clear from the sentence.

Here, holnap means tomorrow, so the future meaning is obvious:

• Holnap indulunk. = We’re leaving tomorrow.

This is very natural in Hungarian. English often does something similar with We’re leaving tomorrow.

Indulunk is the verb indul plus the ending -unk.

• indul = leave, depart, set off, start
• -unk = we

So indulunk means we leave / we are leaving / we set off.

Because Hungarian verbs usually already show the subject.

In indulunk, the ending -unk already tells you the subject is we, so mi is not necessary.

You could add mi for emphasis or contrast:

• Mi holnap indulunk. = We are the ones leaving tomorrow.

But in a normal sentence, leaving it out is completely natural.

Hungarian word order is more flexible than English word order, and it often reflects emphasis or information structure rather than a fixed subject-verb-object pattern.

Putting holnap before indulunk is very natural. It gives the time expression a prominent place in the sentence.

So:

• Mindenképpen holnap indulunk.

feels like Tomorrow is definitely when we’re leaving or We’re definitely leaving tomorrow.

The exact emphasis depends on context and spoken stress, but this word order is completely normal.

Yes, absolutely. That is also natural Hungarian.

Both are correct, but the emphasis can feel slightly different:

• Mindenképpen holnap indulunk. = We are definitely leaving tomorrow.
• Holnap mindenképpen indulunk. = Tomorrow, we are definitely leaving.

In real life, both could translate the same way in English. Hungarian word order often changes the focus or what the speaker is highlighting, not the basic meaning.

They are similar, but not always identical.

• mindenképpen = definitely / in any case / no matter what
• biztosan = certainly / surely / definitely

In many sentences they can both work, but mindenképpen often has a stronger sense of regardless of obstacles or under any circumstances.

So this sentence can sound a bit like:

• No matter what, we’re leaving tomorrow.

Yes, though in some contexts they can be close.

• indulunk = we leave / we depart / we set off
• elindulunk = we set off / we get going / we start out

The prefix el- often adds a clearer sense of starting off or moving away.

So:

• Holnap indulunk. = We leave tomorrow.
• Holnap elindulunk. = We set off tomorrow.

Both are possible, but they are not always interchangeable in every context.

Roughly like:

MIN-den-kayp-pen

A few helpful points:

• Stress in Hungarian normally goes on the first syllable of each word.
• The é is a long vowel, pronounced somewhat like ay in English say, but cleaner and tenser.
• The pp is a doubled consonant, so it is pronounced a bit longer than a single p.

Some very natural translations are:

• We’re definitely leaving tomorrow.
• We’re leaving tomorrow no matter what.
• We will definitely leave tomorrow.

The best choice depends on context, but all of these match the Hungarian sentence well.