| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | amplitudo | amplitudoj |
| Accusative | amplitudon | amplitudojn |
| Czech | amplituda |
|---|---|
| Dutch | amplitude; amplitudo |
| English | amplitude |
| French | amplitude |
| German | Amplitude; Ausschlagsweite; Schwingungsweite |
| Hungarian | amplitúdó; kilengés |
| Portuguese | amplitude |
| Saterland Frisian | Amplitude |
| Spanish | amplitud |