The term "Hellats sign" refers to a specific gesture that gained popularity in recent years. This hand sign involves forming an "H" shape with the index and middle fingers while holding the other fingers closed against the palm. However, if one is looking for synonyms for this specific term, it might be quite challenging. That being said, alternative terms could include "Hand H symbol", "Double finger H gesture", or simply the "H hand sign". While the options may be limited, keep in mind that the intention behind this gesture varies across cultures and contexts, adding diverse meanings and interpretations to this unique hand sign.