Säätyvä

Säätyvä is a Finnish adjective that denotes the property of being regulatable or adjustable. In contemporary Finnish, the standard form for this meaning is säädettävä. Säätyvä appears mainly in older texts, regional dialects, or as a variant spelling; in modern technical and everyday language it is generally avoided in favor of säädettävä or other clearer expressions.

Etymology and form: Säätyvä is formed from the verb stem related to säätää or säättää, meaning to regulate or adjust, combined with a suffix that creates an adjective indicating a characteristic. The result is a word that signals that something possesses the capability to be adjusted. However, the more common construction in standard Finnish uses säädettävä or phrases like säädettävät arvot, which explicitly state the adjustment capability.

Usage and scope: The term can be found in historical texts, dialects, or certain stylistic contexts describing systems, devices, or processes that could be adjusted. In modern Finnish, engineers, scientists, and technical writers typically prefer säädettävä when referring to adjustable components, settings, or parameters. Säätyvä is therefore considered rare or archaic in current usage, with potential for ambiguity.

Related terms and concepts: Säädä and säästö relate to adjustment and regulation, while säädettävä, säädettömyys (unadjustability), and sääntö (rule) cover closely connected ideas. In control theory and engineering, terminology such as säädettävä arvo (adjustable value), säädin (controller), and säätömenettely (tuning procedure) are standard.

See also: Finnish grammar on -vä/-vä adjectives, the lexical family around sääntö and säätö, and general terminology for adjustable systems.