uskollisuudella

Uskollisuudella is a Finnish phrase that translates to "with loyalty" or "loyally" and is formed from the noun uskollisuus (loyalty) with the adessive suffix -lla, yielding the instrumental or manner of action. It is used to indicate that an action is performed with loyalty or faithfulness.

From uskollisuus + -lla; in Finnish grammar, -lla marks the adessive case, used to express means, instrument, or manner. "Uskollisuudella" thus denotes the manner in which something is done—literally "with loyalty."

Common contexts include ethical discussions, descriptions of conduct characterized by loyalty, or marketing and political slogans seeking to emphasize allegiance. In literature, it may be used metaphorically to describe steadfastness or fidelity in relationships, organizations, or institutions. The phrase is less common as a standalone noun than as a grammatical form within larger sentences; its sense is close to "loyally" in English.

Related Finnish terms include uskollisuus (loyalty), uskollinen (loyal), uskollisesti (loyally as an adverb), and loanword lojaliteetti (loyalty in business contexts).