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Definition 2025

εἴδομαι • ‎(eídomai) (poetic)

to be seen, appear
- Homer, Iliad 8.555
- Homer, Iliad 13.98
(with infinitive) to appear, seem to do
- Homer, Iliad 1.228
- Homer, Odyssey 9.11
- Homer, Odyssey 19.283
- Homer, Iliad 14.472
- Homer, Odyssey 8.283
- Homer, Odyssey 5.281
(reflexive, with dative) to make oneself like
- Homer, Iliad 2.791
- Pindar, Nemean Ode 10.28
1. (intransitive) to be like, to look like
  - Homer, Iliad 3.280

The aorist tense, εἶδον ‎(eîdon, “I saw”), has a related but different meaning, and its second aorist middle form, εἰδόμην ‎(eidómēn), contrasts with the first aorist middle of this verb, εἰσᾰ́μην ‎(eisámēn).
The perfect tense, οἶδα ‎(oîda, “I know”), functions as a present tense word with its own meaning.

Present: εἴδομαι

number		singular			dual		plural
		first	second	third	second	third	first	second	third
middle/ passive	indicative	εἴδομαι	εἴδῃ, εἴδει	εἴδεται	εἴδεσθον	εἴδεσθον	εἰδόμεθᾰ	εἴδεσθε	εἴδονται
	subjunctive	εἴδωμαι	εἴδῃ	εἴδηται	εἴδησθον	εἴδησθον	εἰδώμεθᾰ	εἴδησθε	εἴδωνται
	optative	εἰδοίμην	εἴδοιο	εἴδοιτο	εἴδοισθον	εἰδοίσθην	εἰδοίμεθᾰ	εἴδοισθε	εἴδοιντο
	imperative		εἴδου	εἰδέσθω	εἴδεσθον	εἰδέσθων		εἴδεσθε	εἰδέσθων
						middle/passive
infinitive						εἴδεσθαι
participle	m					εἰδόμενος
	f					εἰδομένη
	n					εἰδόμενον
Notes:	This table gives Attic inflectional endings. For conjugation in dialects other than Attic, see Appendix:Ancient Greek dialectal conjugation.

Aorist: εἰσᾰ́μην

number		singular			dual		plural
		first	second	third	second	third	first	second	third
middle	indicative	εἰσᾰ́μην	εἴσω	εἴσᾰτο	εἴσᾰσθον	εἰσᾰ́σθην	εἰσᾰ́μεθᾰ	εἴσᾰσθε	εἴσᾰντο
	subjunctive	εἴσωμαι	εἴσῃ	εἴσηται	εἴσησθον	εἴσησθον	εἰσώμεθᾰ	εἴσησθε	εἴσωνται
	optative	εἰσαίμην	εἴσαιο	εἴσαιτο	εἴσαισθον	εἰσαίσθην	εἰσαίμεθᾰ	εἴσαισθε	εἴσαιντο
	imperative		εἶσαι	εἰσᾰ́σθω	εἴσᾰσθον	εἰσᾰ́σθων		εἴσᾰσθε	εἰσᾰ́σθων
					middle
infinitive					εἴσᾰσθαι
participle	m				εἰσᾰ́μενος
	f				εἰσᾰμένη
	n				εἰσᾰ́μενον
Notes:	This table gives Attic inflectional endings. For conjugation in dialects other than Attic, see Appendix:Ancient Greek dialectal conjugation.

εἴδομαι in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press
εἴδομαι in Liddell & Scott (1889) An Intermediate Greek–English Lexicon, New York: Harper & Brothers
εἴδομαι in Autenrieth, Georg (1891) A Homeric Dictionary for Schools and Colleges, New York: Harper and Brothers
«εἴδομαι» in Bailly, Anatole (1935) Le Grand Bailly: Dictionnaire grec-français, Paris: Hachette
Bauer, Walter et al. (2001) A Greek-English Lexicon of the New Testament and Other Early Christian Literature, Third edition, Chicago: University of Chicago Press
εἴδομαι in Slater, William J. (1969) Lexicon to Pindar, Berlin: Walter de Gruyter
“G1492”, in Strong’s Exhaustive Concordance to the Bible, 1979

From Proto-Indo-European *weyd- ‎(“to know; see”), compare the very closely related οἶδα ‎(oîda). Cognate with Latin videō, Sanskrit वेत्ति ‎(vetti), Old Armenian գիտեմ ‎(gitem), Old Church Slavonic вѣдѣти ‎(věděti), and Old English witan (English wit).