ailing
1. [ adjective ] somewhat ill or prone to illness
Synonyms: peaked sickly poorly under_the_weather unwell indisposed
Examples:

"my poor ailing grandmother" "feeling a bit indisposed today" "you look a little peaked" "feeling poorly" "a sickly child" "is unwell and can't come to work"

Related terms: ill
2. [ adjective ] somewhat ill or prone to illness
Synonyms: peaked sickly poorly unwell indisposed
Examples:

"my poor ailing grandmother" "feeling a bit indisposed today" "you look a little peaked" "feeling poorly" "a sickly child" "is unwell and can't come to work"

Related terms: ill
Similar spelling:   Ayling
  Alling