Learn Farsi: سیستم غول‌آسا ربات‌وار و بدون خطا عمل می‌کرد. - The gigantic system was acting robotically and without error.

The word ghoul means monster or giant. Adding the similitude suffix -âsâ turns it into an adjective meaning giant-like or gigantic. It specifically emphasizes a resemblance in grand scale or physical quality.

Does robât-vâr function as an adjective or an adverb in this sentence?

Here, it acts as an adverb of manner. While suffixes like -vâr can form adjectives (like robot-like), in this sentence robât-vâr describes how the system was acting (robotically). In Farsi, words formed with -vâr often seamlessly act as adverbs without needing extra grammatical markers.

Could we swap the suffixes and say ghoul-vâr and robât-âsâ instead?

While both suffixes denote resemblance, they have different natural nuances. -âsâ is typically used for dramatic, often exaggerated physical comparisons of size or nature (like ghoul-âsâ for gigantic). -vâr is much more commonly used to describe behaviors, manners, or states (like robât-vâr for acting like a robot). Swapping them would sound unnatural to a native speaker.

Where do the unseen Ezafe vowels go in this sentence?

There are two Ezafe links you need to pronounce here. The first connects the noun to its adjective: sistem-e ghoul-âsâ. The second links the preposition to its object: bedun-e khatâ (without error).