Psychological Disorders List - Symptoms and Diagnosis. This psychological disorders list and directory has been abbreviated from the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV). This manual is the most widely used diagnostic criteria for the classification of psychological disorders. Adjustment Disorders.
pest â(plural pests). ( 1 originally) A plague, pestilence, epidemic. 2  An annoying, harmful, often destructive creature. 3  An annoying person.( 4 Britain, slang) Someone with poor social discipline who continually bothers uninterested women.est â(plural pests). ( 1 originally) A plague, pestilence, epidemic. 2  An annoying, harmful, often destructive creature. 3  An annoying person.
Singular and plural nounsNouns can be either singular or plural. Singular means just one of the person, animal or thing which the noun refers to. Plural means more than one. Forming the plural of nounsThe rules for making the plural of nouns depend on the spelling and pronunciation. Most nouns form their plural by adding -s: â¦. Nouns: singular and plural â¦. Nouns used only in the singularSome nouns are used only in the singular, even though they end in -s.