Pronunciation: (fôrth'kum'ing, fōrth'-),[key] —adj. 1. coming forth, or about to come forth; about to appear; approaching in time: the forthcoming concert. 2. ready or available when required or expected: He assured us that payment would be forthcoming. 3. frank and cooperative; candid: In his testimony, the senator could have been more forthcoming. 4. friendly and outgoing; sociable.