Is the sign for *efficient* the same as *clean* or *nice*?
They use similar handshapes, but the movement is different. *Efficient* uses a single, crisp, forward-bouncing motion to emphasize effectiveness and speed. In contrast, *clean* or *nice* typically uses a flat, smooth sliding motion across the entire palm without the upward bounce.
Can this sign also mean *effective*?
Yes, this sign is commonly used to mean both *efficient* and *effective*. Because both concepts relate to a process working smoothly and producing good results, the context of your sentence—along with your facial expressions—will clarify the exact meaning you intend.
Should I mouth the word while signing?
Yes, mouthing 'efficient' can be very helpful for clarity. Because this sign shares visual similarities with other concepts like *effective*, *smooth*, or *excuse*, mouthing the English word ensures your exact meaning is understood by the person you are signing with.