Tultaessa
Tultaessa is a Finnish verbal form that is occasionally found in older or literary texts. It is associated with the verb tulla, meaning “to come,” and is used to convey a temporal meaning roughly comparable to “upon coming” or “when coming.” The exact grammatical status of tultaessa varies somewhat between grammars, but it is generally treated as a temporally oriented non-finite form used to introduce a time frame within a sentence.
In contemporary standard Finnish, tultaessa is uncommon. More typical in everyday language are forms such as
Usage and occurrence: tultaessa is mainly encountered as a feature of older Finnish, regional styles, or scholarly
See also: Finnish grammar of verb forms, the verb tulla, temporal clauses in Finnish, tullessa, tullessaan.