querulent

Denoting one who is ever suspicious, always opposing any suggestion, complaining of ill treatment and of being slighted or misunderstood, easily enraged, and dissatisfied; characteristic of paranoid personalities. ... Origin: L. Querulus, complaining, fr. Queror, to complain ... (05 Mar 2000) ...
Found on http://www.encyclo.co.uk/local/20973

querulent

Type: Term Pronunciation: kwer′ŭ-lĕnt Definitions: 1. Denoting one who is ever suspicious, always opposing any suggestion, complaining of ill treatment and of being slighted or misunderstood, easily enraged, and dissatisfied; characteristic of paranoid personalities.
Found on http://www.medilexicon.com/medicaldictionary.php?t=74659
No exact match found