indisposed vs sickly

indisposed and sickly both are adjectives.

Word	Noun	Adjective	Verb	Adverb
indisposed	No	Yes	No	No
sickly	No	Yes	No	No

As adjectives, indisposed and sickly are synonyms defined as:

Other synonyms of indisposed include ailing, peaked, poorly, seedy, under the weather, unwell.

indisposed (adjective)	sickly (adjective)
(usually followed by `to') strongly opposed	somewhat ill or prone to illness
somewhat ill or prone to illness	unhealthy looking