energía, energy.
enérgico, energetic, forcible.
energúmeno, one mad with anger, possessed (with a devil).
enfadado, angry.
enfadarse, to become angry.
enfermedad, f., sickness, disease.
enfermería, infirmary.
enfermero, -a, nurse.
enfermito, -a, little patient.
enfermo, sick, ill; noun, patient, sick person.