Lexical Definition

‎ἑτεροδιδασκαλέω‎ heterodidaskaléō (het-er-od-id-as-kal-eh'-o) to teach heresy ^G:V
from ‎ἕτερος‎ and ‎διδάσκαλος‎

teach other doctrine(-wise).

• to instruct differently

Abbott-Smith

*† ἑτεροδιδασκαλέω, -ῶ
to teach other or different doctrine: I Ti 1:3 6:3 (cf. CGT, in l.; Milligan, NTD, 102).†

Abbott-Smith References

Liddell-Scott-Jones

ἑτεροδιδασκαλέω-δῐδασκᾰλέω,

teach differently, teach false doctrine, [NT]