1. Incomplete or inadequate progress in growth, advancement, or improvement of something
The child showed signs of insufficient development in language skills.
A criança mostrou sinais de desenvolvimento insuficiente nas habilidades linguísticas.
2. Economic or social progress that does not meet minimum required standards
The country struggles with insufficient development of its infrastructure.
O país enfrenta desenvolvimento insuficiente de sua infraestrutura.
3. Lack of adequate maturation or expansion in a particular area
Insufficient development of the project delayed its completion.
O desenvolvimento insuficiente do projeto atrasou sua conclusão.