gücüyle

Gücüyle is a Turkish word-phrase formed from güç (power) plus the possessive suffix -ü and the instrumental suffix -yle. It literally means "with his/her/its power" or "through its power" and is used to indicate the means or modality by which an action is performed. The instrumental suffix -yle expresses manner or means, so gücüyle functions as a sentence adverbial of means describing how an action is carried out.

As a grammatical unit, gücüyle usually modifies the main verb and denotes agency or the tool through which something is accomplished. It can pair with subjects of various genders and numbers, and the possessive agreement is visible in the suffix: gücüyle refers to "his/her/its power." For plural subjects, the form güçleriyle (“with their power”) is used. Examples: Gücüyle düşmanı yendi. (He defeated the enemy with his power.) Gücüyle hayran bıraktı. (He/She impressed people with his power.)

Etymology and usage notes: güç means power, strength, or influence, with diverse senses in Turkish. The suffix -ü marks third-person singular possession (his/her/its), and -yle marks instrumental meaning “with/using.” Gücüyle is common in literary, journalistic, and spoken Turkish and can convey emphasis on power as a means of action. The phrase contrasts with forms indicating person’s own authority (gücümle, with my power) or with their power (güçleriyle).