Very likely; there is a high probability that a particular event or outcome will occur.
天気予報では明日、雨の可能性が高いと言っていた。
The weather forecast said it's very likely to rain tomorrow.
彼の説明は矛盾しているので、ミスの可能性が高い。
His explanation is inconsistent, so it's very likely a mistake occurred.
値段が急に下がったので、在庫過剰の可能性が高い。
Since the price dropped suddenly, it's very likely there's excess inventory.