Synonym: perfidaĵo
| Part of speech | common noun |
|---|---|
| Hyphenation | per·fid·o |
| Singular | Plural | |
|---|---|---|
| Nominative | perfido | perfidoj |
| Accusative | perfidon | perfidojn |
| Afrikaans | verraad |
|---|---|
| Dutch | verraad |
| English | treachery |
| German | Treubruch; Verrat |
| Hungarian | álnokság |
| Papiamento | traishon |
| Portuguese | traição |
| Saterland Frisian | Ferräid; Trjoubreek |
| West Frisian | ferried |