Do-nothing and Trigger-happy

Do-nothing adjective - Characterized by inability or unwillingness to work toward a goal or assume responsibility.

Trigger-happy and do-nothing are semantically related. In some cases you can use "Trigger-happy" instead an adjective phrase "Do-nothing".

Trigger-happy adjective - Irresponsible in the use of firearms.

Do-nothing and trigger-happy are semantically related. Sometimes you can use "Do-nothing" instead an adjective phrase "Trigger-happy".