A proposition is a proposed plan of action, a detailed suggestion. You might consider your friend's suggestion to set up a neighborhood snow-shoveling business after the blizzard a winning proposition.

The noun proposition means something presented for consideration. In some contexts, that something being offered is sexual. Therefore, don't use the term proposition loosely. If you say that you made a proposition to your teacher, people could misinterpret you. It's safer to stick with suggestion.

Primary Meanings of proposition

a proposal offered for acceptance or rejection
suggest sex to
(logic) a statement that affirms or denies something and is either true or false
Full Definitions of proposition

n a proposal offered for acceptance or rejection

proffer, suggestion
breath, hint, intimation
an indirect suggestion
ghost, touch, trace
a suggestion of some quality
advance, approach, feeler, overture
a tentative suggestion designed to elicit the reactions of others
Type of:
something proposed (such as a plan or assumption)

n an offer for a private bargain (especially a request for sexual favors)

Type of:
offer, offering
something offered (as a proposal or bid)

n the act of making a proposal

the act of presenting a proposal
first reading
the first presentation of a bill in a legislature
second reading
the second presentation of a bill in a legislature; to approve its general principles (Britain) or to discuss a committee's report and take a vote (US)
Type of:
speech act
the use of language to perform some act

n a task to be dealt with

“securing adequate funding is a time-consuming proposition
Type of:
labor, project, task, undertaking
any piece of work that is undertaken or attempted

v suggest sex to

“She was propositioned by a stranger at the party”
Type of:
advise, propose, suggest
make a proposal, declare a plan for something

n (logic) a statement that affirms or denies something and is either true or false

show 13 types...
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particular, particular proposition
(logic) a proposition that asserts something about some (but not all) members of a class
universal, universal proposition
(logic) a proposition that asserts something of all members of a class
(logic) a proposition that is true if and only if another proposition is false
a proposition obtained by conversion
a subsidiary proposition that is assumed to be true in order to prove another proposition
a proposition deducible from basic postulates
conclusion, ratiocination
the proposition arrived at by logical reasoning (such as the proposition that must follow from the major and minor premises of a syllogism)
posit, postulate
(logic) a proposition that is accepted as true in order to provide a basis for logical reasoning
(logic) a proposition that is not susceptible of proof or disproof; its truth is assumed to be self-evident
Bayes' postulate
(statistics) the difficulty of applying Bayes' theorem is that the probabilities of the different causes are seldom known, in which case it may be postulated that they are all equal (sometimes known as postulating the equidistribution of ignorance)
Euclid's axiom, Euclid's postulate, Euclidean axiom
(mathematics) any of five axioms that are generally recognized as the basis for Euclidean geometry
binomial theorem
a theorem giving the expansion of a binomial raised to a given power
assumption, premise, premiss
a statement that is assumed to be true and from which a conclusion can be drawn
Type of:
a message that is stated or declared; a communication (oral or written) setting forth particulars or facts etc

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