'syntax error 'what does it mean by?

Answer 1

it means ur program has some 'language' based errors

Answer 2

missing syntax or using miss syntax
something like normally if condition is
if .... :
but your code is
if .....
so you're missing ":"

Answer 3

wrong format

Answer 4

A grammatical error in programming language.

Answer 5

A SyntaxError is one of the most common exceptions in Python, and it's caused by any 'grammatical' error in the code