satisfactory - acceptable, sufficient, good enough⏎
unfriendly - hostile, opposing, antagonistic⏎
schedule - timetable, plan, list⏎
voluntary - uncharged (fee), offered, done willingly⏎
unofficial - illegal, independent, unauthorised, unauthorized⏎
wake-up call - sudden warning⏎
sink - decrease, deteriorate, suppress⏎
spec - specification, detailed description⏎
statute - law, legislation, formal rule⏎
situation - circumstance, circumstances, predicament, position, matter, issue, subject, concern, job, opportunity⏎