Unwilling to help or please others; not accommodating or obliging in manner or behavior.
From French 'desobligeant', prefix 'de-' (reversal) plus 'obligeant' (obliging, helpful). Borrowed into English in the 1700s describing someone who refuses to be accommodating.
This French word perfectly captures that person who makes a point of being unhelpful—not by accident, but by deliberate choice, as if refusing to oblige is their personality trait.
Complete word intelligence in one call. Free tier — 50 lookups/day.