Noun type: 7
Characteristics
Singular
| Nominative | happi |
| Partitive | happea |
| Genetive | hapen |
| Accusative | hapen |
| Inessive | hapessa |
| Elative | hapesta |
| Illative | happeen |
| Adessive | hapella |
| Ablative | hapelta |
| Allative | hapelle |
| Essive | happena |
| Translative | hapeksi |
| Abessive | hapetta |
Plural
| Nominative | hapet |
| Partitive | happia |
| Genetive | happien |
| Accusative | hapet |
| Inessive | hapissa |
| Elative | hapista |
| Illative | happiin |
| Adessive | hapilla |
| Ablative | hapilta |
| Allative | hapille |
| Essive | happina |
| Translative | hapiksi |
| Abessive | hapitta |
| Instructive | hapin |
| Comitative | happine |
Sample Sentences
Etymology
From happo (“acid”) (for semantics, compare German Sauerstoff from sauer (“sour, acidic”)); coined by Finnish folk poetry researcher, translator and journalist Julius Krohn in 1862. Declension as an e-stem rather than an i-stem noun is modeled after typpi (“nitrogen”), also introduced by Krohn as an element name.
Nouns inflected like happi
alpi,
appi,
arki,
arpi,
haahti,
hanhi,
hanki,
happi,
hapsi,
hauki,
helmi,
helpi,
henki,
hetki,
hiki,
hirvi,
hyttysparvi,
impi,
indigosini,
joki, etc. (List truncated at 20 nouns)