IPA: /ˈskwɛl.tʃər/
KK: /ˈskwɛltʃər/
A device or remark that suppresses or eliminates something, often used to describe a comment that silences or discourages further discussion.
His harsh criticism was a real squelcher that stopped the conversation in its tracks.
Squelcher → The word is formed from 'squelch' (of imitative origin, meaning to crush or squash) and the suffix '-er' (meaning a person or thing that performs an action). A squelcher is something that crushes or suppresses, often used in a figurative sense to describe something that silences or dampens enthusiasm.
Think of something that 'crushes' or 'squelches' excitement — that's why a squelcher is something that suppresses or dampens enthusiasm.