Avocation
Hobby
Capricious
Unpredictable change
Disparity
Lack of similarity
Efficacy
Effectiveness
Epistle
Letter
Hospice
Home providing care for sick
Impetus
Moving force
Moribund
Near death
Reticent
Reserved
Vacillate
Indecisive
Akin
Similar nature
Corroborate
Give support
Inexorable
Impossible to stop
Insipid
Lacking flavor
Nefarious
Wicked
Physiognomy
Facial features
Retinue
Group of people attending an important meeting/person, entourage
Suppliant
Person making humble plea to someone in power
Tedium
Dull, boring
Torrid
Hot and dry