debility

As a noun debility

is a state of physical or mental weakness.

As an adjective undefined is

lacking a definition or value.

Debility is a related term of languor.

As nouns the difference between debility and languor

is that debility is a state of physical or mental weakness while languor is (uncountable) a state of the body or mind caused by exhaustion or disease and characterized by a languid feeling: lassitude.

Debility is a related term of defect.

As nouns the difference between debility and defect

is that debility is a state of physical or mental weakness while defect is a fault or malfunction.

As a verb defect is

to abandon or turn against; to cease or change one's loyalty, especially from a military organisation or political party.

As nouns the difference between debility and frailty

is that debility is a state of physical or mental weakness while frailty is (uncountable) the condition quality of being frail, physically, mentally, or morally; frailness; infirmity; weakness of resolution; liability to be deceived or seduced.

As a letter a

is the letter a with a tilde.

As a noun debility is

a state of physical or mental weakness.

As nouns the difference between debility and infirmness

is that debility is a state of physical or mental weakness while infirmness is the quality of being infirm; feebleness.

As nouns the difference between debility and faintness

is that debility is a state of physical or mental weakness while faintness is the property of being or feeling faint.

As nouns the difference between foible and debility

is that foible is a quirk, idiosyncrasy, or mannerism; unusual habit or way (usage is typically plural), that is slightly strange or silly while debility is a state of physical or mental weakness.

As an adjective foible

is weak; feeble.

Debility is a related term of failing.

As nouns the difference between debility and failing

is that debility is a state of physical or mental weakness while failing is weakness; defect.

As a verb failing is

.

As a preposition failing is

if the preferred or prior option is not possible.

Disease is a related term of debility.

As nouns the difference between disease and debility

is that disease is (pathology) an abnormal condition of the body or mind that causes discomfort or dysfunction; distinct from injury insofar as the latter is usually instantaneously acquired while debility is a state of physical or mental weakness.

As a verb disease

is (obsolete) to cause unease; to annoy, irritate.