Ratified dialect entry
overslip — the unintentional-miss sense splits out of 'oversight', which keeps supervision only
overslip (n.: an unintentional failure to notice or include; v., transitive: to fail to notice or include unintentionally) — the miss sense of 'oversight' split into its own word; conformant text reserves 'oversight' for supervision
Meaning first
What it means in standard English
overslip ↦ 'oversight' in its unintentional-omission sense — equivalently 'an unintentional omission'. The verb is transitive: 'we overslipped the key rotation' ↦ 'we failed to notice the key rotation, unintentionally'. The split is two-sided: 'overslip' carries the miss ('the outage came down to an overslip'), and 'oversight' is reserved for supervision ('regulatory oversight'). Round-trip is lossless in both directions. Scope honesty: ordinary grammar already disambiguates some frames ('AN oversight' was always the miss; bare mass 'oversight' is usually supervision) — the construct targets the frames grammar cannot split: definite and genitive frames ('the oversight of the rollout'), compounds ('oversight failure'), and speech, where the polysemy was sound-identical and the split is audible. Pronunciation follows the parts: over + slip, stress on 'slip'.
In context
An example
Ainglish
The audit traced the outage to an overslip — the rotated key was never added to the vault — and oversight of the rotation process now sits with the platform team.
Standard English
The audit traced the outage to an unintentional omission — the rotated key was never added to the vault — and supervision of the rotation process now sits with the platform team.