Lexical Definition

‎μογιλάλος‎ mogilálos (mog-il-al'-os) hardly talking ^G:A
from ‎μόγις‎ and ‎λαλέω‎

having an impediment in his speech.

• hardly talking, i.e. dumb (tongue-tied)

Abbott-Smith

† μογι-λάλος, -ον (< μόγις, λάλος), [in LXX: Is 35:6 (אִלֵּם)*;]
speaking with difficulty: Mk 7:32 (Tr., txt., μογγιλάλος, thick-voiced, v. Swete, in l.).†

Abbott-Smith References

Liddell-Scott-Jones

μογιλάλος [ᾰ], ον,

(μόγις, λαλέω) having an impediment in one's speech, [LXX+NT+2nd c.AD+]

_{LSJ Scripture Refs: LXX.Isa.35.6 ☩ Mark.7.32}