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The forms with i-za ending appear in Lechkhumian as well: madliz-a
"for grace", momavl-iz-a "for the future", gul-iz-a "for the sake of,
for the heart", etc. (B. Jorbenadze, 1989, p. 503); and in Rachan: tav-izda
"for one’s sake", amb-iz-da "for the matter", etc. (B. Jorbenadze,
1989, p. 414).
Thus, the Megrelian adessive is identical to the relevant forms in
Svan and Pkhovian dialects, as well as Gurian, Imeretian and
Lechkhumian dialects in terms of form and sematics. (cf. the Genitive
derived Adverbial case is used for possession in Old Georgian as well:
da vkmnet sami ţalavari: erti šendad, ert moseysad, erti eliaysad "and
let us make three tabernacles; one for thee, and one for Moses, and one
for Elias", Mark 9).
The Directional case is formed by adding the Adverbial case suffix
a (a) of the Adverbial case is
mainly represented in the Directional case, the consonant seems lost
(though it is preserved in –da form in the pronoun).
In Megrelian the forms with suffix –da express direction: skan-da
"towards you, with you", čkin-da "towards us, with us"… In literary
Georgian and some of the dialects it expresses purpose): šen-da "for
you"… imiza "for the need of it"...
In archaic Georgian the forms with da>a suffix (čem-da, matda/mat-a,
mis-a, etc.) express both possessive purpose and direction (T.
Sharadzenidze, 1956, pp. 425-426; I. Imnaishvili, 1957, pp. 493-495, etc.). It
has lost the directional function and maintained that of the possessive
purpose. In Megrelian the forms with da>a suffix have the remaining
directional function, as for the function of possessive purpose, it is attested
in suffix form o(t) (