At a loss and Behindhand

At a loss adjective - Filled with bewilderment.

Behindhand and at a loss are semantically related in operating at a loss topic. In some cases you can use "Behindhand" instead an adjective phrase "At a loss".

Behindhand adjective - Not arriving, occurring, or settled at the due, usual, or proper time.

At a loss and behindhand are semantically related in operating at a loss topic. Sometimes you can use "At a loss" instead an adjective "Behindhand".