IPA: /dɪˈsaɪdə/
KK: /dɪˈsaɪdər/
A person or thing that makes a decision or determines the outcome of something.
The coach is the decider when it comes to choosing the starting lineup for the game.
Decider → It is formed from "de-" (meaning down or from) and "caedere" (meaning to cut). The word "decider" refers to someone who makes a decision by cutting through options or choices.
Think of someone 'cutting through' ('caedere') choices to make a decision ('de-'). This helps you remember that a decider is someone who makes a choice.