Half-seas over and Under-the-table

Under-the-table and half-seas over are semantically related. In some cases you can replace phrase "Under-the-table" with "Half-seas over", this phrases are similar.

Under-the-table adjective - Designed and carried out secretly or confidentially.

Half-seas over and under-the-table are semantically related. Sometimes you can use "Half-seas over" instead an adjective phrase "Under-the-table".