unclaim means to cancel one's claim to. Lexicurio rates it Rare gem — a strength score of 82 out of 100.
Etymology
From un- + claim.
verb
- To cancel one's claim to.“This dashboard is useful for looking at the task workload by assignee. Alerts can be set up to notify when a bottleneck for an assignee occurs so that you could configure an action (such as reassigning or unclaiming the task) to quicken the resolution of the task and allow the process to continue.”