Verb:NOD

Nod does just that, the action of nodding: moving ones head down and up, sometimes once, sometimes multiple times, sometimes quickly, sometimes slowly, with a variety of facial expressions. Nodding can express many different emotions and is an excellent verb to be familiar with for roleplaying purposes.

Usage:
NOD [style] [target]

Where [style] is one of the following:
    CURT    SLOW     GREET    SLIGHT     EMPHATIC    ENCOURAGE    
    FIRM    AGREE    QUICK    SOMBER     GRACIOUS    AGGRESSIVE    
    GLUM    BRIEF    SLEEP    APPROVE    GRATEFUL    THOUGHTFUL    
    GRIM    BRISK    TERSE    FERVENT    REASSURE    PERFUNCTORY    
    MEEK    EAGER    VAGUE    KNOWING    SYMPATHY    APPRECIATIVE    
    ONCE    FAINT    ABSENT   PATIENT    VIGOROUS    ENTHUSIASTIC     
    SAGE    GRAVE    POLITE   RESPECT    IMPATIENT   SATISFACTION    
                     RHYTHM   CHEERFUL   RELUCTANT   UNDERSTANDING