Intimidating

Don't worry. He may look intimidating at first glance, but he's actually a very friendly person.

It's a bit intimidating.

I don't find it intimidating.

Tom felt demoralised by his boss's intimidating behaviour.

Tom finds Mary's mother to be quite intimidating.

Tom finds Mary's mother quite intimidating.

Do not fear me. I am afraid of many whom I find enviable, intimidating, or simply awkward to talk to. I don't want anyone to similarly fear me in any of those ways—over my time on these sites, I've encountered some people who were afraid of me, specifically or non-specifically. Let us dispel our mutual fears.

It was intimidating.

Tom is intimidating. When children see him, they all run away.

It's quite intimidating.