Providing. Do not use providing for if or on the condition.
Wrong: I will go providing you can get tickets for three.
Right: I will go on the condition that you get the tickets.
Raise, rise. Do not confuse raise with rise. See §57.
Recommend, recommendation. Do not use recommend as a noun. Recommendation is the noun.
| Wrong: Her employer gave her a good recommend. |
| Right: Her employer gave her a good recommendation. |
Right away, right off. Do not use right away or right off in the sense of immediately.
| Wrong: After the play we will come right off. |
| Right: After the play we will come at once. |
Same. Do not use same as a pronoun.
| Wrong: I will write the letter and mail same at once. |
| Right: I will write the letter and mail it at once. |