16. These presents are formed by reduplication, usually of the initial consonant with ῐ.
- ἵη-σι (for σίση-σι?)
- ἱστᾶσι (σι-στᾰ-)
with Attic reduplication ὀνίνη-σι (for ὀν-ονη-) benefits, perhaps also ἵλη-θι be appeased (ἵλα-μαι I propitiate; Hom. H. xxi. 5: stem ῑ̔λα for σι-σλᾰ, Meyer, G. G. p. 437).
In these present stems the quantity of the vowel in the stem regularly varies under the rules laid down in § 6.1.
The vowel is long in ἐμ-πίπλη-θι (Il. 21.311), ἵλη-θι, δίδω-θι (Od. 3.380)2 and the infinitive τιθή-μεναι (Il. 23.83 & 247) and participle τιθή-μενος (Il. 10.34). Also in δίζη-μαι (I seek; for *δι-δι̯η-), the Homeric verb answering to Attic ζη-τέω.
ἵημι is now generally connected with Latin sero (for si-so, cp. ἵστημι sisto). Earlier scholars (as Bopp) derived it from the root yā (Latin ja-c-io). Possibly it represents both σί-σημι (sā-) and ἰ-ι̯ημι (yā-). In meaning it is much nearer to jacio than to sero.