Possibly syvä + -nto. While this would require a seemingly irregular shift from front into back vowels, the front-vowel variant syväntö is also attested in dialects.
suvanto
Inflection of suvanto (Kotus type 1*J/valo, nt-nn gradation) | |||
---|---|---|---|
nominative | suvanto | suvannot | |
genitive | suvannon | suvantojen | |
partitive | suvantoa | suvantoja | |
illative | suvantoon | suvantoihin | |
singular | plural | ||
nominative | suvanto | suvannot | |
accusative | nom. | suvanto | suvannot |
gen. | suvannon | ||
genitive | suvannon | suvantojen | |
partitive | suvantoa | suvantoja | |
inessive | suvannossa | suvannoissa | |
elative | suvannosta | suvannoista | |
illative | suvantoon | suvantoihin | |
adessive | suvannolla | suvannoilla | |
ablative | suvannolta | suvannoilta | |
allative | suvannolle | suvannoille | |
essive | suvantona | suvantoina | |
translative | suvannoksi | suvannoiksi | |
abessive | suvannotta | suvannoitta | |
instructive | — | suvannoin | |
comitative | See the possessive forms below. |