| 1 | fossilfreí | Stammform | basic form |
| 2 | fossílfreier | Nominativ, Maskulinum, Singular, Starke Deklination | nominative case, masculine, singular, strong declension |
| 3 | fossilfreíen | Genitiv, Akkusativ, Maskulinum, Singular, Starke Deklination | genitive case, accusative case, masculine, singular, strong declension |
| 4 | fossilfreíem | Dativ, Maskulinum, Singular, Starke Deklination | dative case, masculine, singular, strong declension |
| 5 | fossilfreié | Nominativ, Akkusativ, Femininum, Singular, Starke Deklination | nominative case, accusative case, feminine, singular, strong declension |
| 6 | fossilfreíer | Genitiv, Dativ, Femininum, Singular, Starke Deklination | genitive case, dative case, feminine, singular, strong declension |
| 7 | fossilfreíes | Nominativ, Akkusativ, Neutrum, Singular, Starke Deklination | nominative case, accusative case, neuter, singular, strong declension |
| 8 | fóssilfreien | Genitiv, Neutrum, Singular, Starke Deklination | genitive case, neuter, singular, strong declension |
| 9 | fossilfreíem | Dativ, Neutrum, Singular, Starke Deklination | dative case, neuter, singular, strong declension |
| 10 | fossilfreíe | Nominativ, Akkusativ, Plural, Starke Deklination | nominative case, accusative case, plural, strong declension |
| 11 | fossilfreíer | Genitiv, Plural, Starke Deklination | genitive case, plural, strong declension |
| 12 | fossilfreíen | Dativ, Plural, Starke Deklination | dative case, plural, strong declension |
| 13 | fossilfreíe | Nominativ, Maskulinum, Singular, Schwache Deklination | nominative case, masculine, singular, weak declension |
| 14 | fossilfreíen | Genitiv, Dativ, Akkusativ, Maskulinum, Singular, Schwache Deklination | genitive case, dative case, accusative case, masculine, singular, weak declension |
| 15 | fossilfreíe | Nominativ, Akkusativ, Femininum, Singular, Schwache Deklination | nominative case, accusative case, feminine, singular, weak declension |
| 16 | fossilfreíen | Genitiv, Dativ, Femininum, Singular, Schwache Deklination | genitive case, dative case, feminine, singular, weak declension |
| 17 | fossilfreíen | Nominativ, Genitiv, Dativ, Akkusativ, Plural, Schwache Deklination | nominative case, genitive case, dative case, accusative case, plural, weak declension |
| 18 | fossílfreier | Nominativ, Maskulinum, Singular, Gemischte Deklination | nominative case, masculine, singular, mixed declension |
| 19 | fossilfreíen | Genitiv, Dativ, Akkusativ, Maskulinum, Singular, Gemischte Deklination | genitive case, dative case, accusative case, masculine, singular, mixed declension |
| 20 | fossilfreíe | Nominativ, Akkusativ, Femininum, Singular, Gemischte Deklination | nominative case, accusative case, feminine, singular, mixed declension |
| 21 | fossilfreíen | Genitiv, Dativ, Femininum, Singular, Gemischte Deklination | genitive case, dative case, feminine, singular, mixed declension |
| 22 | fossilfreíes | Nominativ, Akkusativ, Neutrum, Singular, Gemischte Deklination | nominative case, accusative case, neuter, singular, mixed declension |
| 23 | fossilfreíen | Genitiv, Dativ, Neutrum, Singular, Gemischte Deklination | genitive case, dative case, neuter, singular, mixed declension |
| 24 | fossilfreíen | Nominativ, Genitiv, Dativ, Akkusativ, Plural, Gemischte Deklination | nominative case, genitive case, dative case, accusative case, plural, mixed declension |
| 25 | - | Superlativ | |
| 26 | - |