Definition of dishevel in US English:

dishevel

verbdishevels, disheveled, dishevelled, dishevelling, disheveling

[with object]
  • Make (a person's hair or clothes) untidy.

    ‘he ran one hand through his hair, further disheveling it’
    • ‘Alex lightly dug his fist into my head, disheveling my hair.’
    • ‘I leaned against him, running my fingers through his tidy brown hair, disheveling it.’
    • ‘Edward ran a hand through his hair, disheveling it, as he entered his own bedchamber.’
    • ‘‘Sorry,’ he runs a hand through his hair, further disheveling it, ‘hope it wasn't too long a wait…‘’
    • ‘He sighed and ran a hand through his neat hair, disheveling it completely.’
    • ‘She was so beautiful, standing there, looking at him with her deep-set eyes and the wind disheveling her hair, blowing it across her peachy skinned face.’
    • ‘I sat up quickly, disheveling my clothes and pillows.’
    disorder, bring into disorder, throw into disorder, put out of place, throw into disarray, make disorderly, disorganize, disturb, displace
    View synonyms

Origin

Probably a back-formation from disheveled.

Pronunciation

dishevel

/dəˈSHev(ə)l//dəˈʃɛv(ə)l/