1. A difficult or problematic start to something, marked by obstacles, setbacks, or rough experiences
The new company had a bumpy beginning with several technical failures in the first month.
A nova empresa teve um início turbulento com várias falhas técnicas no primeiro mês.
2. An unstable or uncomfortable starting period characterized by challenges and instability
Their relationship had a bumpy beginning, but they eventually worked through their differences.
O relacionamento deles teve um início turbulento, mas eventualmente resolveram suas diferenças.