To sign 'liar', start by making the sign for 'lie'. Bring your dominant hand up to your chin with your palm facing down and fingers slightly bent, then slide it horizontally across your chin. Next, add the 'person' ending by holding both flat hands in front of you, palms facing each other, and moving them straight down.
Sign 'HE', 'TERRIBLE', then 'LIAR'. Use an exaggerated facial expression on 'terrible' to emphasize how bad the lying is. Your body language should reflect frustration or disapproval to match the strong meaning of the sentence.
Sign 'DON'T', then 'LIAR'. Shake your head and use a stern, direct facial expression to convey the negative command. Maintaining strong eye contact with the person you are addressing will make the instruction clear and assertive.
Sign 'I', 'KNOW' (nodding slightly to indicate past tense or certainty), 'SHE', and then 'LIAR'. Your facial expression should show realization, confirmation, or a lack of surprise, demonstrating that you already suspected the person was not telling the truth.
Sign 'HE', 'TERRIBLE', then 'LIAR'. Use an exaggerated facial expression on 'terrible' to emphasize how bad the lying is. Your body language should reflect frustration or disapproval to match the strong meaning of the sentence.
Sign 'DON'T', then 'LIAR'. Shake your head and use a stern, direct facial expression to convey the negative command. Maintaining strong eye contact with the person you are addressing will make the instruction clear and assertive.
Sign 'I', 'KNOW' (nodding slightly to indicate past tense or certainty), 'SHE', and then 'LIAR'. Your facial expression should show realization, confirmation, or a lack of surprise, demonstrating that you already suspected the person was not telling the truth.
The main difference is the addition of the agent suffix. 'Lie' is just the first part of the sign, where your dominant hand slides across your chin. 'Liar' adds the 'person' suffix at the end—both flat hands moving straight down—to change the verb into a noun meaning 'a person who lies'.
Yes, if you want to specifically refer to the person (the noun 'liar'), you need to include the 'person' ending. If you omit it, you are simply signing the verb 'to lie' or the concept of 'a lie'. The ending clarifies that you are talking about the individual.
Yes, you might see some signers use an index finger sliding across the chin for the 'lie' portion of the sign. However, using a flat hand with slightly bent fingers is very common, widely understood, and generally considered the standard way to form this sign in most contexts.
