Psalm 45/Notes/Grammar.v. 1.505212
From Psalms: Layer by Layer
v. 1 – As noted by GKC (§124e), יְדִידֹֽת fits well the category of "a number of plurals, found almost exclusively in poetry ... which are evidently intended to intensify the idea of the stem" (cf. Ḥakham 1979, 257).