expression, noun-modifying (irregular)
hard to approach; intimidating; high barrier to entry
Describes a place, person, or group that feels difficult to visit or approach because of formality, high status, or past awkwardness. Often used for someone's home or an exclusive establishment. Compare 敷居が高い, which is the predicative form.
See also: 敷居が高い
That shop has an intimidating atmosphere, so it's hard to go in.
After we had a fight, his house became a place I felt awkward visiting.
Literally 'having a high threshold', from 敷居 (threshold) + が + 高い (high). The metaphorical meaning of being difficult to approach comes from the idea of a high doorstep that is hard to step over.