1. A weak, unconvincing, or poorly constructed story or account that lacks substance, credibility, or logical coherence
The defendant's flimsy narrative about his whereabouts failed to convince the jury.
A narrativa frágil do réu sobre seu paradeiro não convenceu o júri.
2. An explanation or story that is easily questioned, doubted, or refuted due to insufficient evidence or logical inconsistencies
The government's flimsy narrative about the incident was quickly challenged by independent journalists.
A narrativa frágil do governo sobre o incidente foi rapidamente desafiada por jornalistas independentes.