yksinkertainen

yksin (instructive plural) +‎ -kertainen; the sense "of one, unique" was the original sense, but the other senses are already found in Old Literary Finnish.

• IPA^(key): /ˈyksinˌkertɑi̯nen/,
• Rhymes: -ertɑinen
• Syllabification^(key): yk‧sin‧ker‧tai‧nen

yksinkertainen (comparative yksinkertaisempi, superlative yksinkertaisin)

1. simple, basic (uncomplicated)
2. simple, plain (unrefined, without frills)
3. simple, simple-minded (lacking mental capacity)
4. (uncommon) of one, unique, single, singular
5. (somewhat uncommon) one-time

• “yksinkertainen”, in Kielitoimiston sanakirja [Dictionary of Contemporary Finnish]‎ (in Finnish) (online dictionary, continuously updated), Kotimaisten kielten keskuksen verkkojulkaisuja 35, Helsinki: Kotimaisten kielten tutkimuskeskus (Institute for the Languages of Finland), 2004–, retrieved 2023-07-04