Taatakseen

Taatakseen is a Finnish verbal form formed from the verb taata (to guarantee, ensure) and the purposive suffix -akseen (modern orthography -akseen/-äkseen). Grammatically it is the third infinitive in a purposive construction, used to express purpose or intention with reference to a third person or an impersonal subject. Its basic nuance is "in order that he/she/it may ensure" or more tersely "to ensure" when the actor is not the speaker.

The form is common in formal and written Finnish and often appears in subordinate clauses of purpose. It can be paraphrased with a finite clause introduced by jotta (so that) or by an infinitive with a different subject marking when the actor differs. Example: Hän muutti käytäntöjä taatakseen turvallisuuden (He/she changed procedures to ensure safety). Another example: Toimenpiteitä lisättiin taatakseen laatu (Measures were increased to ensure quality).

Usage notes: taatakseen follows vowel harmony rules of the suffix, and the construction does not inflect for person beyond the inherent third-person reference of the suffix. In many contexts it conveys an official or deliberate aim and is interchangeable with finite purpose clauses when clarity about the actor is needed. The verb taata itself is a common lexical item in administrative, legal, and technical language, and taatakseen appears frequently in such registers.