"voider" in the noun sense
1. invalidator, voider, nullifier
an official who can invalidate or nullify
"my bank check was voided and I wanted to know who the invalidator was"
2. defecator, voider, shitter
a person who defecates
3. voider, gusset
a piece of chain mail covering a place unprotected by armor plate
4. clothes hamper, laundry basket, clothes basket, voider
a hamper that holds dirty clothes to be washed or wet clothes to be dried
"voider" in the adjective sense
1. null, void
lacking any legal or binding force
"null and void"
"the earth was without form, and void"
Source: WordNet® (An amazing lexical database of English)
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