っこない

っこない expresses strong impossibility or that something cannot possibly happen. It conveys a sense of futility or extreme doubt about the outcome. It is more casual and often slightly rough or masculine in nuance. It is commonly used for situations where someone feels tasks are beyond their ability or circumstances make the outcome impossible. It can attach to the stem forms of verbs (the ます-stem or continuative form) and to potential forms with the kana っこない after でき. It is not used for polite or formal statements; more natural in everyday speech or informal writing.