intimidating

Concise Oxford English Dictionary © 2008 Oxford University Press:
intimidate/ɪnˈtɪmɪdeɪt/

▶verb frighten or overawe (someone), especially in order to make them do what one wants.

– derivatives
intimidating adjective,
intimidatingly adverb,
intimidation noun,
intimidator noun,
intimidatory adjective.

– origin C17: from med. L. intimidat-, intimidare ‘make timid’ (based on timidus ‘timid’).