Converse of object

• become: His ambitions were high, but he became a dilettante.

Modifies a noun

• gentleman: In the large waists and strong arms of the girls under his training, some dilettante gentleman may mourn a loss of feminine delicacy.

• attitude: Local Afghanis resented not only the greater wealth of the " Gucci Mujahadeen, " but also their dilettante attitude toward the fighting.