fat shaming

Short definition from Wiktionary

Noun

1. 1
   Bias, invective, or discrimination targeted at individuals because of their weight (overweightness, obesity).
2. 2
   The act of criticizing or deriding someone's obesity.

Verb

1. 1
   present participle and gerund of fat shame
2. 2
   present participle and gerund of fat-shame