σύ.
sŭ́
second person singular personal pronoun: thou, you
Meaning & usage
second person singular personal pronoun: thou, you
Where this word comes from
From Proto-Hellenic *tú, from Proto-Indo-European *túh₂. Cognates include Sanskrit त्वम् (tvam), Latin tū, Persian تو (to) and Old English þū (English thou). The initial /s/ was spread to the nominative from oblique forms such as accusative σέ (sé) < *twé, where /s/ is the regular development of Proto-Indo-European *tw-.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.