1) Alarming 2) Baleful 3) Forbidding 4) French word used in English 5) Menacing 6) Menacing threatening 7) Minacious 8) Ominous 9) Sinister 10) Threatening 11) Ugly Found on https://www.crosswordclues.com/clue/minatory
Min'a·to·ry adjective [ Latin minatorius , from minari to threaten. See Menace .] Threatening; menacing. Bacon. Found on http://www.encyclo.co.uk/webster/M/68