IPA: /ˈpɒstʃər/
KK: /ˈpɑːstʃər/
A person who adopts a particular position or attitude, often for effect or to impress others.
The posturer at the party tried to show off his confidence by standing tall and speaking loudly.
Posturer → It is formed from "posture" (from Latin *ponere*, meaning to place or put) and "-er" (meaning a person who). The word "posturer" refers to a person who assumes or maintains a particular position or stance.
Think of someone who 'places' themselves in a certain way — 'posture' relates to how one stands or sits, and the '-er' indicates that this is a person.