Here are some synonyms for the word "clues":
Hints
"Clues" and "hints" are often used interchangeably. They both refer to pieces of information that can help someone understand a situation, solve a mystery, or find an answer. For example, "The detective found several clues at the crime scene" can be rewritten as "The detective found several hints at the crime scene".
Indications
"Indications" can also mean signs or pieces of evidence that suggest something. It implies giving a direction or pointing towards a particular conclusion. Like in the sentence, "There were some indications that the suspect had left the city", which is similar to saying "There were some clues that the suspect had left the city".
Suggestions
This word can be used in a similar way to "clues" when it comes to providing an idea or something that might lead to a discovery. For instance, "The strange marks on the wall were suggestions of a hidden passageway", which is close in meaning to "The strange marks on the wall were clues to a hidden passageway".
Leads
In the context of investigations or trying to figure something out, "leads" are like clues that can guide you further. For example, "The police followed up on several leads in the case", which means they pursued several clues that might help them solve the case.
Traces
"Traces" can refer to small pieces of evidence or signs left behind that can act as clues. Such as "The footprints were the traces (or clues) that helped them track the thief's path".