IPA: /ˈnɛɡətɪˌvɪzəm/
KK: /nɛgətɪvɪzəm/
A consistent attitude of doubt or refusal to accept suggestions or instructions from others.
His negativism made it difficult for the team to implement new ideas.
Negativism is formed from "negativus" (from Latin, meaning 'not' or 'against') and "-ism" (a suffix used to denote a practice or philosophy). The word refers to a tendency to be negative or to oppose, often in a philosophical or psychological context.
Think of 'not' or 'against' ('negativus') to remember that 'negativism' describes a mindset that tends to oppose or reject.