#1 sickly s. [sallow] unhealthy looking. wn
#2 sickly s. [ailing, indisposed, peaked, poorly, unwell, under the weather, seedy] somewhat ill or prone to illness; "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". wn
vizzz