Use 'solipsistic' to describe someone overly focused on themselves, ignoring others' needs or existence. She was so solipsistic during the meeting, not once considering our proposals.
Pro Tip 2/3
Negative Connotation
'Solipsistic' often implies a negative opinion about someone's self-centered attitude. His solipsistic disregard for team input frustrated everyone.
Pro Tip 3/3
Non-Literal Use
Often used metaphorically to criticize narrow perspectives, not to be taken literally. The company's solipsistic approach to business ignores the changing market.