Strong's G5104 — τοί (particle)
toi (toy') prt.
1. in sooth
{used only with other particles in the comparative, as G2544, G3305, G5105, G5106, etc.}
[probably for the dative case of G3588, an enclitic particle of asseveration by way of contrast]
 Root(s): G3588 
See also: G2544, G3305, G5105, G5106 
Hebrew root: ὁ