Adj (also Friengagement, noun) Contraction of "Friend" and "Engaged"-
1. When a male and a female friend are so close, everyone knows or thinks they'll end up getting married and having babies . Mutual attraction is not required.
2. When two guys are so close, they're basically close enough to be married in the future. See also bromance.
- "Are Jack and Jill going out yet?"
- "Nah, they're just Friengaged"