How to Sign "Suspicious"
To sign *suspicious*, bring your dominant hand up to the side of your forehead near your temple, with your index finger extended. Bend your index finger a couple of times into an 'X' handshape, as if lightly scratching the side of your head. A crucial part of this sign is your facial expression—make sure to furrow your eyebrows and squint slightly to convey a feeling of doubt or skepticism.