1. Of the relatively near future
   "the forthcoming holidays";
   - approaching, coming, upcoming
    
2. Available when required or as promised
   "federal funds were not forthcoming"
    
3. Sociable and at ease talking to others; expressive and lively
   "The forthcoming candidate connected well with voters";
   - extroverted, outgoing
    
4. Readily reacting or replying to people or events or stimuli; showing emotion
   "children are often the quickest and most forthcoming members of the audience";
   - responsive

See also: answering, available, future, respondent, sensitive, sociable

Encyclopedia: Forthcoming