adj.1. Uttered without the use of normal words or syllables; incomprehensible as speech or language: "a cry ... that ... sank down into an inarticulate whine" (Jack London).
2. Unable to speak; speechless: inarticulate with astonishment.
3. Unable to speak with clarity or eloquence: an inarticulate debater.
4. Going unexpressed: inarticulate sorrow.
5. Biology Not having joints or segments.