While it is possible to read the word as utlagé, i.e. the p.p. of utlager used as a s. (‘one who is outlawed’ vs. ‘outlaw’), with some editions indeed preferring to use the accent, the English etymology suggests that the accent is unnecessary; see also FEW utlage 17,417a. Nevertheless, see utlager for a small number of instances where the form suggests the existence of a past participle used as substantive. The DMLBS has examples of utlagatus used as a substantive sub utlagare (3575c). In English, outlawed as a substantive is not attested in the medieval period.