grandiose 壮大な

https://www.yourtango.com/self/ways-spot-narcissistic-person-way-they-dress-according-psychology

7. They’re fixated on wearing luxury and designer brands

be fixated on 執着する

https://km-englinic.com/2787

A outshine B AはBより秀でている

mannerisms 特徴、習慣