Careless and Improficient

Careless adjective - Not paying or showing close attention especially for the purpose of avoiding trouble.

Improficient and careless are semantically related In some cases you can use "Improficient" instead an adjective "Careless".

Nearby Words: care, careful, carelessly, carelessness

Careless and improficient are semantically related in inefficient topic. Sometimes you can use "Careless" instead an adjective "Improficient", if it concerns topics such as wasteful.