Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb staunch

1 sense of staunch

Sense 1
stem, stanch, staunch, halt -- (stop the flow of a liquid; "staunch the blood flow"; "stem the tide")
       => check -- (arrest the motion (of something) abruptly; "He checked the flow of water by shutting off the main valve")

Antonyms of adj staunch

1 sense of staunch

Sense 1
steadfast, staunch, unswerving -- (firm and dependable especially in loyalty; "a steadfast ally"; "a staunch defender of free speech"; "unswerving devotion"; "unswerving allegiance")

INDIRECT (VIA constant) -> inconstant -- (likely to change frequently often without apparent or cogent reason; variable; "inconstant affections"; "an inconstant lover"; "swear not by...the inconstant moon"- Shakespeare)

Similarity of adj staunch

1 sense of staunch

Sense 1
steadfast, staunch, unswerving -- (firm and dependable especially in loyalty; "a steadfast ally"; "a staunch defender of free speech"; "unswerving devotion"; "unswerving allegiance")
       => constant (vs. inconstant) -- (steadfast in purpose or devotion or affection; "a man constant in adherence to his ideals"; "a constant lover"; "constant as the northern star")