Languid is an adjective but can also be used as an adverb, languidly or a noun, languidness. Derived from the Latin verb languēre (to languish), languid has been mistaken with the word languorous, which is also derived from the word languēre. Although they have similar meanings, languid describes a sluggish disposition that one experiences from exhaustion, while languorous applies to someone who just doesn’t want to get up. Additionally, languid was first used in the late 1550’s, while languorous was first used almost 100 years earlier.
At mile 21, Emily was exhausted but still proceeded, even if it was at a languid pace.