Answer
The interference is intermediate but closer to fully constructive.
Work Step by Step
The interference is fully constructive when the phase difference is $m~\lambda,$ where $m$ is an integer
The interference is fully destructive when the phase difference is $(m+\frac{1}{2})~\lambda,$ where $m$ is an integer
If the waves are out of phase by $0.833~\lambda$, the interference is intermediate but closer to fully constructive.
The interference is intermediate but closer to fully constructive.
