From Proto-Finnic *lanko, borrowed from an unknown derivation of Proto-Germanic *langōną (whence Old English ġelangian, Old High German gilangōn). The original meaning was simply "relative", shifting into "relative by marriage, in-law" and finally "brother-in-law".
lanko
| Inflection of lanko (Kotus type 1*G/valo, nk-ng gradation) | ||||
|---|---|---|---|---|
| nominative | lanko | langot | ||
| genitive | langon | lankojen | ||
| partitive | lankoa | lankoja | ||
| illative | lankoon | lankoihin | ||
| singular | plural | |||
| nominative | lanko | langot | ||
| accusative | nom. | lanko | langot | |
| gen. | langon | |||
| genitive | langon | lankojen | ||
| partitive | lankoa | lankoja | ||
| inessive | langossa | langoissa | ||
| elative | langosta | langoista | ||
| illative | lankoon | lankoihin | ||
| adessive | langolla | langoilla | ||
| ablative | langolta | langoilta | ||
| allative | langolle | langoille | ||
| essive | lankona | lankoina | ||
| translative | langoksi | langoiksi | ||
| abessive | langotta | langoitta | ||
| instructive | — | langoin | ||
| comitative | See the possessive forms below. | |||
From Proto-Finnic *lanko. Cognates include Finnish lanko.
lanko
| Declension of lanko (type 4/koivu, nk-ng gradation) | ||
|---|---|---|
| singular | plural | |
| nominative | lanko | langot |
| genitive | langon | lankoin, lankoloin |
| partitive | lankoa | lankoja, lankoloja |
| illative | lankoo | lankoi, lankoloihe |
| inessive | langoos | langois, lankolois |
| elative | langost | langoist, lankoloist |
| allative | langolle | langoille, lankoloille |
| adessive | langool | langoil, lankoloil |
| ablative | langolt | langoilt, lankoloilt |
| translative | langoks | langoiks, lankoloiks |
| essive | lankonna, lankoon | lankoinna, lankoloinna, lankoin, lankoloin |
| exessive1) | lankont | lankoint, lankoloint |
| 1) obsolete *) the accusative corresponds with either the genitive (sg) or nominative (pl) **) the comitative is formed by adding the suffix -ka? or -kä? to the genitive. | ||
lañko