Learn Turkish: İtişmiyoruz çünkü disiplin çok önemli. - We are not pushing each other because discipline is very important.

The base verb is itmek (to push). We drop the -mek and add the reciprocal suffix -iş to make itişmek (to push each other). Then we add the negative suffix -mi, the present continuous tense -yor, and the 'we' personal ending -uz to get itişmiyoruz.

Why is the reciprocal suffix -iş here, but -uş or just -ş in other verbs?

The reciprocal suffix changes based on 4-way vowel harmony. Because the vowel in the root it- is 'i', the suffix becomes -iş. It starts with a vowel here because the root it- ends in a consonant. If the root ended in a vowel, like anla- (to understand), it would only take -ş, making anlaşmak.

There is no verb at the end of the sentence. How do we know it means 'discipline IS very important'?

In simple present tense sentences, Turkish often doesn't need a word for 'is' or 'are' when describing 'he/she/it' or general concepts. Disiplin çok önemli perfectly translates to 'Discipline is very important' all on its own. The 'is' is simply implied by the grammar.

Is the word önemli made up of smaller parts?

Yes! The root noun is önem, which means 'importance'. The suffix -li means 'with' or 'having'. So önemli literally means 'having importance', which we naturally translate as 'important'.