IPA: /ˈstɔːntʃər/
KK: /ˈstɔːntʃər/
More firm or loyal in support or belief than others.
He is a stauncher supporter of the team than anyone else.
Comparative: stauncher
Superlative: staunchest
Stauncher is derived from the word 'staunch' (from Old French *estancher*, meaning to stop or stem a flow) and the suffix '-er' (meaning a person who). Thus, a stauncher is a person who stops or stems something, often used in the context of stopping a flow or leak.
Think of someone who 'stops' ('estancher') a flow — that's what a stauncher does, they stem or stop something.