teravusega
Teravusega is an Estonian noun phrase formed from teravus (sharpness, acuity) with the suffix -ga, which marks means or manner. The expression means “with sharpness” or “by means of sharpness” and is used to indicate the manner in which an action is performed or a description is made. The form is relatively common in formal or literary Estonian and can refer to both physical sharpness of a tool and figurative sharpness of speech, thought, or perception.
Usage notes: teravusega typically accompanies verbs or clauses to express manner. For example, ta vastas teravusega,
Etymology and morphology: the word is derived from teravus (sharpness, acuity) with the instrumental/comitative suffix -ga,