bandwagon fallacy

/ˈbændwæɡən ˌfæləsi/

arguing something is true because many people believe it

bandwagon fallacy in a sentence

“Everyone uses this product isn't a valid argument—that's the bandwagon fallacy.”

American English from band musical group + wagon, referring to circus wagons carrying bands in parades

Related Words

begging the question

assuming the conclusion in the premise; circular reasoning

burden of proof

shifting the responsibility to disprove a claim rather than prove it

cherry picking

selecting only evidence that supports your position while ignoring contradictory data

circular reasoning

using the conclusion as a premise in the argument

correlation vs causation

assuming that because two things correlate, one causes the other

equivocation

using a word with multiple meanings to mislead