Two relative pronouns exist for Greek, one of which, namely the indeclinable `pou', is encoded in the Morphological Lexicon as a separate category. The other pronoun is `opoios', which is always preceded by the definite article and agrees in gender, number and case with its referent; it is considered more formal than `pou'. Again, in the following table, only the nominative case of the singular of the masculine is given.
| Relative | Gr. example | Gr. tag |
| opoios | PnRe03MaSgNm | |
| pou | Po | |