Lexical Definition

‎דָּדָה‎ dâdâh (daw-daw') to go slowly H:V
a doubtful root

go (softly, with).

1) to move slowly
1a) (Hithpael) to walk deliberately

Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
אֶדַּדֶּ֥ה I will walk deliberately Isa.38.15
אֶדַּדֵּ֗ם I led them Ps.42.4

Brown-Driver-Briggs

[‎דָּדָה‎] verb [move slowly] (Late Hebrew Pi`el ‎דִּדָּה‎ lead slowly, Hithpa`el ‎הִדַּדָּה‎; Aramaic ‎דַּדִּי‎, ‎אִידַּדִּי‎; Arabic is run quickly (of a camel): on form, compare i. 587; SS derive from ‎דאה‎ compare Sta§ 112 a, 150 a. 129 b, 581 d) —

Pi`el Imperfect 1 singular suffix ‎אֲדַדֵּם‎ (so read for ᵑ0 ‎אֶדַּדֵּם‎ Dy Bi & Che, compare his critical note) lead slowly (in procession) Ps 42:5*. Hithpa`el Imperfect 1 singular ‎אֶדַּדֶּה‎ Isa 38:15 also suffix ‎אֶדַּדֵּם‎ Ps 42:5* ᵑ0 but compare above; — walk deliberately, at ease (De Che Di), or as in procession (Ew), Isa 38:15 (compare Che Di VB).

Brown-Driver-Briggs References

Book Refs
Psalms 42:5*
Isaiah 38:15