1. Ability or skill in a particular area that is doubtful, uncertain, or subject to doubt; professional or technical capability that lacks credibility or reliability
The contractor's questionable competence led to numerous construction delays and budget overruns.
A competência questionável do contratante resultou em múltiplos atrasos na construção e estouros de orçamento.
2. Lack of clear evidence of adequate knowledge, skill, or capability to perform required duties or responsibilities
His questionable competence in financial management raised concerns among board members.
Sua competência questionável na gestão financeira levantou preocupações entre os membros do conselho.