Do you repeat yourself? Do you say the same thing over and over again? Tautological phrases repeat what has already been said using different words (which defines the second sentence of this paragraph). Eliminating tautological phrases can strengthen your writing.
According to Wikipedia, tautology is considered a fault of style and was defined by Henry Watson Fowler (1858-1933) in A Dictionary of Modern English Usage (1926), a style guide to British English usage, pronunciation and writing.
Delete the following phrases to strengthen your writing:
ATM machine (the M stands for machine, so if we write ATM machine, we are actually writing Automatic Teller Machine machine)
6 a.m. in the morning
What tautological phrases do you use in your writing, or see in the writings of others?