Learn Turkish: Sahnedeki koreografi gerçekten çarpıcı. - The choreography on the stage is truly striking.

The current lesson focuses on double negation (negative verb + değil). Since this sentence has no verb, how could I rewrite it to mean "It's not that the choreography isn't striking"?

Because çarpıcı is an adjective, you need to introduce a verb to use this double negation structure. You can use olmak (to be) or gelmek (to seem/come): Sahnedeki koreografi çarpıcı gelmiyor değil. (It's not that the choreography doesn't seem striking). This gives the nuanced, understated praise typical of this grammar point.

What is the root of the word çarpıcı (striking)?

It comes from the verb çarpmak, which means "to hit," "to strike," or "to crash." The suffix -ıcı is added to verbs to describe something that performs that action characteristically (similar to "-ing" or "-er" in English). Just as something that visually or emotionally "hits" you in English is "striking," the exact same logic applies in Turkish.

As a refresher, how does the -ki suffix change the grammar of sahnede?

The locative word sahnede means "on the stage." Adding the relational -ki suffix turns it into an adjective that directly modifies the noun right next to it: sahnedeki koreografi literally acts as "the on-the-stage choreography."

Could I drop -ki and just say Sahnede koreografi gerçekten çarpıcı?