脅す【おどす】
to threaten, to menace, to frighten (into doing)
脅迫【きょうはく】
threat, menace, coercion, blackmail
脅かす【おどかす】
to threaten, to menace, to intimidate, to startle, to frighten, to scare
脅威【きょうい】
threat, menace
脅かす【おびやかす】
to intimidate, to frighten, to scare, to threaten (e.g. peace), to jeopardize, to endanger, to imperil
脅し【おどし】
threat, bird-scaring device (scarecrow, gun, etc.)
脅かし【おどかし】
threat