► sign an event, fact, etc. that shows that something is happening or will happen, or that something is true or exists: There were signs of a struggle – several chairs were knocked over. Police found no sign of forced entry.
► indication indication means the same as sign but sounds more formal: He gave no indication that he saw me.
► indicator a sign that people look for and can recognize which tells them what is happening or is true: New home sales are used as an indicator of how well the economy is doing.
► evidence facts or signs that show clearly that something exists or is true: The warm breeze is evidence that spring is on its way.
► signal a sign that tells someone to take action or warns someone about something: My mother called me by my full name, always a signal that she was angry.
► symptom a sign that an illness or problem exists: Seizures are a common symptom of the disease. Rising unemployment rates are a symptom of the bad economy.
► mark a sign, especially that you respect or honor someone: People stood in silence as a mark of respect.
► trace a very small sign that a particular situation exists or is true: There was not a trace of sadness in his voice.