The belief in the superiority of one's country, group, gender, etc.
verb tr.: To protest by refusing to buy a product or to deal with a person, organization, nation, etc. noun: The practice or an instance of this.
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adverb: Proportionally. adjective: Proportional.
adverb: With which. pronoun: The thing(s) with which. conjunction: By means of which.
For a particular purpose only (as opposed to a wider application); impromptu.