1. To conclude something in a weak, unconvincing, or unsatisfactory manner; to finish without impact or proper resolution
The movie ended lamely with a predictable twist that nobody found satisfying.
O filme terminou de forma fraca com uma reviravolta previsível que ninguém achou satisfatória.
2. To finish an event, performance, or statement in a disappointing or anticlimactic way
His speech ended lamely when he ran out of things to say.
Seu discurso terminou de forma fraca quando ele ficou sem o que dizer.