why not 'he is positive'?
Είναι θετικό cannot be "he is positive" because θετικό is neutral and in English you must use "it"
Είναι θετικός = he is positive
Είναι θετική = she is positive
Είναι θετικό = it is positive
Θετικο means positive. Ok. What is the greek word for negative?
Θετυσ was the name of the mother of Achillevs. Is there a connection?