Learn Turkish: Hata için birbirinizi suçlayacağınıza biraz sorumluluk üstlenin. - Instead of blaming each other for the mistake, assume some responsibility.

This word uses the grammatical structure you are currently learning: verb + -(y)acak + possessive + dative -(y)a. It is built from the verb root suçla- (to blame) + -yacağ- (future suffix with a softened 'k') + -ınız (your, plural) + -a (dative case). While it literally looks like "to your future blaming", Turkish uses this exact pattern to mean "instead of doing [verb]".

Why does birbirinizi have both a possessive suffix and an accusative suffix?

The base word for "each other" is birbiri. In Turkish, this word must take a possessive suffix that matches the people involved. Since the subject is "you" (plural), we add -niz to get birbiriniz. Then, because the verb suçlamak (to blame) requires a specific direct object, we add the accusative suffix -i at the very end to mark it as the object of the blaming.

Why is the command at the end üstlenin rather than just üstlen?

The sentence is directed at more than one person (a plural "you"). We know this because the earlier words use plural suffixes (birbiriniz and suçlayacağınız). To keep the sentence grammatically consistent, the command verb must also be in the 2nd-person plural, which is formed by adding -in to the root üstlen-.

What is the literal meaning behind the verb üstlenmek?