TOEIC Link Part 5: premise versus premises
Premise and premises look like a simple singular-and-plural pair, but they are really two different words that happen to share a stem. The blank is not asking you to count; it is asking whether the sentence means an idea being assumed or a physical place being occupied. Premise (singular) is a proposition — the assumption an argument or plan is built on. Premises (plural, and it keeps the s even when it feels like one building) is a location — the property a business operates from. Decide whether the sense is an assumption or a place, and the form follows. For the wider set of look-alike traps, start with the commonly confused word pairs master index.
Note the wrinkle worth naming up front: premises in the location sense is grammatically plural but refers to a single site. A company can rent premises that is one office suite, and you still say the premises are secure, never the premise is secure when you mean the building. The trailing s is not optional here — dropping it changes the meaning from a place to an idea.
The core rule: an assumption (singular) versus a property (plural)
- premise = a proposition or assumption that reasoning rests on (singular noun). The plan is built on the premise that demand will grow. It answers what idea is being assumed? Link premise to assumption, proposition, and basis, and note it is countable and takes a singular verb (the premise is flawed, a false premise, on the premise that).
- premises = a building and its grounds occupied by an organization (plural-only noun). Visitors must sign in at reception before entering the premises. It answers which place is occupied? Link premises to property, site, and grounds, and note it takes a plural verb and no article of number (the premises are, on the premises, vacate the premises).
The key difference: premise names an idea you assume, while premises names a place you occupy. If the blank means a starting assumption, choose premise; if it means a physical location, choose premises.
Why Part 5 likes this pair
Because the two forms differ by a single s and both come from the same root, Part 5 can offer premise in a slot that clearly means a building, or premises in a slot that clearly means an idea, to catch a reader who matches by look rather than sense. The strongest signal is the surrounding context: words like enter, vacate, lease, on the, and security point to the place (premises); words like false, basic, underlying, accept, and on the ... that point to the idea (premise).
The proposal rests on the __ that the merger will be approved.
An idea being assumed needs premise.
All staff must evacuate the __ during the fire drill.
A physical place being left needs premises.
Spotting the clue
Decide first whether the word means an idea or a place, then confirm the form:
- Does the blank name an assumption the reasoning depends on, and does it take a singular verb or the phrase on the ... that? → choose premise (a false premise, the underlying premise, accept the premise, on the premise that costs will fall).
- Does the blank name a building or site a business occupies, and does it take a plural verb or a preposition of place? → choose premises (on the premises, enter the premises, commercial premises, the premises are monitored).
A quick test: can you put assumption or proposition in the slot? Then it is the singular premise. Can you put the building or the site in the slot? Then it is the plural premises. Because the split is by meaning rather than count, this pair sits alongside other look-alike traps such as affect versus effect and loose versus lose.
Common Part 5 patterns
- Anything that means an assumption wants premise: a false premise, the basic premise, on the premise that, accept the premise, the premise of the study, a flawed premise.
- Anything that means a business location wants premises: on the premises, off the premises, enter the premises, vacate the premises, business premises, the premises are secured after hours.
Note the useful line: if the sentence is about reasoning, arguments, or plans, the answer is the singular premise; if it is about buildings, security, leases, or where people work, the answer is the plural premises. On the page, the trailing s is the only clue that survives, so read the meaning rather than trust the near-identical look.
Quick reference
- premise = an assumption or proposition (singular) → think basis, takes a singular verb.
- premises = a building and its grounds (plural-only) → think property, takes a plural verb, keeps the s.
If the blank names an idea the reasoning rests on, it is premise; if it names the place a business occupies, it is premises. Read the meaning and this pair stops being a coin toss.