Lexical Definition

‎καταλαλέω‎ katalaléō (kat-al-al-eh'-o) to slander G:V
from ‎κατάλαλος‎

speak against (evil of).

Usage: 16 forms in 19 verses
Form Translated As     In Verse(s)
κατελαλήσαμεν we spoke ill LXX.Num.21.7LXX.Mal.3.13
κατελάλουν spoke ill LXX.Ps.119.23
κατελάλησαν spoke LXX.Mal.3.16
spoke ill LXX.Hos.7.13
they spoke ill LXX.Ps.78.19
κατελάλεισ you spoke ill LXX.Ps.50.20
κατελάλει spoke ill LXX.Num.21.5
καταλαλῶν speaking against Jas.4.11
καταλαλοῦσιν they speak against 1Pet.2.12
καταλαλούντα one speaking ill LXX.Ps.101.5
καταλαλούμενα being spoken ill LXX.1Sam.2.23
καταλαλεῖτε do speak against Jas.4.11
καταλαλεῖσθε you are spoken against 1Pet.3.16
καταλαλεῖ speaks against Jas.4.11
καταλαλείτέ You speak ill LXX.Job.19.3
καταλαλείν to speak ill LXX.Prov.20.13
καταλαλήσουσι shall speak ill LXX.Mic.3.7
καταλαλήσαι to speak ill LXX.Num.12.8

Abbott-Smith

κατα-λαλέω, -ῶ, [in LXX chiefly for דּבר ni., pi.;]
to speak evil of, rail at: in cl., c. acc.; in LXX,
(a) c. gen.,
(b) seq. κατά, c. gen.; in NT, c. gen. (M, Pr., 65): Ja 4:11, I Pe 2:12; pass., I Pe 3:16.†

Abbott-Smith References

Book Refs
James 4:11
1 Peter 2:12 · 3:16

Liddell-Scott-Jones

καταλαλέω-έω,

perfect -λελάληκα[Refs 2nd c.AD+]:—talk, babble loudly, τοῖς θύραζε ταῦτα κ. [Refs 5th c.BC+]; τινος before another, [Refs 2nd c.AD+]

__II talk down, rail at, ἡμᾶς [Refs 2nd c.BC+]; τινος [NT+1st c.BC+]; κατά τινος[LXX]:—passive, ἐπί τινι [Refs 2nd c.BC+]; to be outdone in speech, ὑπ᾽ ἰδιωτῶν [Refs 1st c.BC+]
__II.2 weary by talking, gloss on{καταγλωττίζειν}, [Refs 2nd c.AD+]
__II.3 simply, interview, address a person, [Refs 3rd c.BC+]

LSJ Scripture Refs: 1Pet.2.12LXX.Hos.7.13LXX.Ps.49.20*