Our thanks to the Carnegie Mellon Writer’s Style Guide, the primary source for the following, which is used with permission.
Adverse means unfavorable. Averse means reluctant.
To affect means (1) to influence, change, or produce an effect; (2) to like to do, wear, or use; or (3) to pretend. As a noun, affect is best avoided. (It is occasionally used in psychology to describe an emotion.) Effect is most commonly used as a noun, and it means result. Used as a verb, to effect means to accomplish, complete, cause, make possible, or carry out.
As a general rule, if you’re looking for a noun, you’re probably looking for effect. If you’re using a verb, you’re safest with affect. (A correct use of effect as a verb is: The committee hopes to effect a change in the current policy.)
To allude to means to speak of indirectly, without mentioning specifically. To refer to means to speak of directly.
An allusion is an indirect reference. An illusion is a false impression or image.
Around should refer to a physical proximity or surrounding: I’ll look for you around the front of the building. About indicates an approximation: Let’s have lunch about 11:30 a.m.
best as a noun, not a verb
Use beside to mean (1) at the side of (sit beside me); (2) to compare with (beside other studies); or (3) apart from (that’s beside the point).
Use besides to mean (1) furthermore (Besides, I said so.); (2) in addition to (and elm and maple trees besides); or (3) otherwise (There’s no one here besides Bill and me.).
Between takes an objective pronoun—me, her, him. “Between you and me” is correct; “Between you and I” is not.
Biannual means twice a year. Biennial means every two years.
A complement is something that supplements. A compliment is praise or the expression of courtesy.
Compose is to create or put together. Comprise is to contain, to include all, or to embrace. Constitute is to make up, to be the elements of. Never write “is comprised of.”
- The whole comprises the parts.
- The parts constitute the whole.
- The whole is composed of parts.
- The department comprises 12 people.
- Twelve people constitute the department.
- The department is composed of 12 people.
Continual refers to a steady repetition. Continuous means uninterrupted.
plural (more than one criterion, which is a quality, a value, or a standard of judgment)
plural (more than one curriculum, which is a program of academic courses or learning activities)
The plural noun usually takes a plural verb.
If used as a collective noun, when the group or quantity is regarded as a singular noun, it takes a singular verb. (The data is sound.)
daylight saving time
not daylight-savings time or daylight-saving time
not different than
Disinterested means impartial. Uninterested means lacking interest.
eastern standard time
not Eastern standard time
Entitled means having the right to something. Use titled to introduce the name of a work.
- She is entitled to the inheritance.
- The article is titled “Love and Illusion.”
Farther refers to physical distance. Further refers to an extension of time or degree.
In general, use fewer for individual items, less for bulk or quantity.
Hang means to fasten or suspend, usually from above, with no support from below. Hung is the past tense of this verb and is used to refer to objects. Hanged refers to people and means to kill or commit suicide by suspending from the neck.
- She hangs artwork for the gallery. Last week she hung 48 pieces.
- Police found the prisoner had hanged himself before the trial.
Use as two words without a hyphen in all cases, unless it is treated differently as part of a proper name.
Historic means important in history. Historical refers to any event in the past.
Unless you’re describing the way someone spoke, appeared, or acted, do not use this word.
- Right: I hope we can go.
- Wrong: Hopefully, we can go.
- Right: It is hoped the report will address that issue.
- Wrong: Hopefully, the report will address that issue.
- Right: She eyed the interview list hopefully.
Imply means to suggest or indicate indirectly. To infer is to conclude or decide from something known or assumed.
In general, if you imply something, you’re sending out a message. If you infer something, you’re interpreting a message.
in regard to
not in regards to
As regards or regarding may also be used.
Insure means to establish a contract for insurance of some type. Ensure means to guarantee.
Use regardless instead.
Do not coin verbs with this suffix, and do not use already coined words such as finalize (use end or conclude) or utilize (use the word use).
Lay means to place something or someone down. It must be followed by a direct object. Lie means to rest or recline. Lie is not followed by a direct object. The tenses of these two verbs can be confusing, especially because the simple past form of the verb lie (which is lay) is the same word as the simple present lay. The tenses are as follows: Lay (simple present), laid (simple past), laid (past participle), and laying (present participle). Lie (simple present), lay (simple past), lain (past participle), lying (present participle).
- She usually lays the book on the table, but I don’t know where she laid it this morning.
- When he is sick he likes to lie on the sofa. When he had the flu last week, he lay there for three days straight.
A speaker stands on a podium and behind a lectern.
To let alone means to allow something to remain undisturbed. To leave alone means to depart from or cause to be in solitude.
Use like to compare nouns and pronouns. Use as to introduce clauses and phrases. Like is the preferred expression (rather than such as) in this kind of phrase: painters like Rubens.
Literally means in an exact sense. Figuratively means metaphorically or in a manner of speaking.
- Right: The furnace literally exploded.
- Right: He was so furious he figuratively blew his stack.
- Wrong: He was so furious he literally exploded.
Me is the objective case of I. Myself is used reflexively, for emphasis, or in absolute construction.
- Right: It’s between you and me.
- Wrong: You can tell your supervisor or myself.
- Right: I, myself, believe otherwise.
Use more than to mean in excess of. Use over when referring to physical placement of an object, an ending, or extent of authority.
- Right: More than 25 professors participated.
- Wrong: The campus has over 50 buildings.
Use this word any time you use neither.
This is redundant. Use experience alone.
Many writers use these terms as if they were synonymous. The preferred meaning of presently is soon. Presently also can be used to mean for the time being or temporarily. Currently means now. In most cases you can do without using currently. For example, “We are currently revising the plan” works better when simply stated, “We are revising the plan.”
Pretense is a false show or unsupported claim to some distinction or accomplishment. Pretext is a false reason or motive put forth to hide the real one—an excuse or a cover-up.
Principal as a noun is a chief person or thing; as an adjective, it means first in importance. Principle is a noun meaning a fundamental truth, doctrine, or law; a guiding rule or code of conduct; or a method of operation.
- John is a principal in the law firm.
- The principal rule in medicine is to do no harm.
- I had difficulty understanding the principles of physics.
To rebut is to argue to the contrary. To refute is to disprove. However, refute can also mean to deny the truth or accuracy of, as in “refute the allegations.”
This is a word. Irregardless is nonstandard and should be avoided.
Always use RSVP, not rsvp or R.S.V.P.
Shall is used for the first-person future tense.
- I shall be indisposed in the days following my surgery.
If will is used for first-person future, it expresses his or her determination or consent. At other times, will is used for the second- and third-person future tense.
- Although I have a cold, I will attend the luncheon tomorrow.
In references to departments or proper nouns that use the spelling theatre, retain that spelling. In all other cases, use theater.
- Students have many opportunities to go to the theater.
- The Pittsburgh Public Theater and City Theatre both have nice venues.
- Charity Randall Theatre
- Henry Heymann Theatre
- Studio Theatre
Toward is standard U.S. usage; towards is the predominant form in British English and should be avoided.
Use the word use. Utilize is the awkward verb form of the obsolete adjective utile.
Do not use this suffix to coin words such as weatherwise.