1. to end something in a weak, unconvincing, or disappointing manner; to conclude without vigor or impact
The movie started strong but finished lamely with a predictable ending.
O filme começou forte mas terminou de forma fraca com um final previsível.
2. to fail to maintain momentum or enthusiasm towards the conclusion of an activity or performance
He gave a good speech but finished lamely when he ran out of ideas.
Ele fez um bom discurso mas terminou de forma insossa quando lhe faltaram ideias.