A sniveler is someone who cries or sniffles in a weak or annoying way, especially when they want sympathy or attention.
The word sniveler is not very nice. It makes people think of someone who is weak or annoying.
Examples:
The sniveler was crying and asking for help.
Don't be a sniveler, be strong!
The sniveler was always asking for help.
The sniveler was crying so much, it was almost funny.
The sniveler cried all day and all night.
The sniveler was always asking for help, but no one wanted to help.