Groggy and Under the weather

Groggy adjective - Stunned or confused and slow to react (as from blows or drunkenness or exhaustion).

Under the weather and groggy are semantically related. In some cases you can use "Under the weather" instead an adjective "Groggy".

Under the weather adjective - Somewhat ill or prone to illness.

Groggy and under the weather are semantically related. Sometimes you can use "Groggy" instead an adjective phrase "Under the weather".