Ways should not be used for way, e. g., "It is quite a ways (way) off."
What is often misused for that, e. g., "He has no doubt but what (that) he will succeed."
Whence means "from what place or cause" and should not be preceded by from. This applies equally to hence which means "from this place."
Which should not be used with a clause as its antecedent, e. g., "He replied hotly, which was a mistake" should be "He replied hotly; this was a mistake." Which being a neuter pronoun should not be used to represent a masculine or feminine noun. Use who. Between the two neuter pronouns which and that let euphony decide.
Who should not be misused for whom or whose, e. g., "Who (whom) did you wish to see?" "Washington, than who (whose) no greater name is recorded." Impersonal objects should be referred to by which rather than who.
Without should not be used for unless, e. g., "I will not go without (unless) you go with me."
Witness should not be used for see.
Worst kind or worst kind of way should not be used for very much.
Womanly means "belonging to woman as woman."
Womanish means effeminate.