lambánō
From Proto-Hellenic *hlagʷ-, probably from a Proto-Indo-European *(s)leh₂gʷ-, with cognates including Old English læċċan (English latch). This etymology is supported by the form ΛΗΑΒΩΝ (lhabōn, aorist participle) found in an inscription in Corfu indicating initial voiceless /l̥/, which would have developed from a Proto-Indo-European *sl- cluster. Also see λάζομαι (lázomai) and λάφυρον (láphuron).
The present stem λαμβάνω (lambánō) has zero-grade of the PIE root with nasal infix and suffix, like λανθάνω (lanthánō, “do secretly”) and τυγχάνω (tunkhánō, “happen”). The second aorist ἔλᾰβον (élabon) has zero-grade and no further modifications, like ἔλαθον (élathon) and ἔτυχον(étukhon). The forms with eta, such as future λήψομαι (lḗpsomai), have e-grade, like λήσω (lḗsō) and τεύξομαι (teúxomai). The e-grade perfect εἴληφα (eílēpha) derives from reduplication of the original stem in *sl- (*sesl- > *εἱλ- (*heil-) regularly followed by unexpected loss of aspiration), but the change from β (b) to φ (ph) is irregular.
λᾰμβᾰ́νω • (lambánō) first-singular present indicative