Last modified on 9 November 2014, at 20:35


Ancient GreekEdit


From Proto-Indo-European *wóyd-. Compare the very closely related εἴδομαι (eídomai, to see). Cognates include Old Armenian գիտեմ (gitem), Sanskrit वेद (veda), Latin vīdī, and Proto-Germanic *witaną (English wit).




οἶδᾰ (oîda)

  1. to know
    1. (with infinitive)
    2. (with participle) to know that
    3. (the fact is often added as a separate clause)
    4. (οὐκ οἶδα εἰ) I don't know, indicating disbelief or doubt
    5. (similar ellipses are frequent with other conjunctions)
    6. (parenthetic)
    7. (a superlative is often followed by the phrase "ὧν ἴσμεν")

Usage notesEdit

The perfect inflections function as present tense, and the pluperfect as imperfect.


The inflection is highly variable and irregular, yet reflects a more archaic inflectional pattern.