af·fair 
(ə-fâr)
(ə-fâr)n.
1.
a. Something done or experienced; a matter or event: Preparing dessert was a messy affair.
b. A matter of personal concern: What I did is my own affair.
c. A matter causing public scandal and controversy: the Dreyfus affair.
d. A social function: The reception was a posh affair.
2. affairs
a. Transactions and other matters of professional or public business: affairs of state.
b. Personal business: get one's affairs in order.
3. An object or a contrivance: Their first car was a ramshackle affair.
4. A sexual relationship between two people, especially when at least one of them is married or in another committed romantic relationship.
[Middle English affaire, from Old French afaire, from a faire, to do : a, to (from Latin ad; see AD-) + faire, to do (from Latin facere; see dhē- in the Appendix of Indo-European roots).]
- learner
- learning
- learning curve
- learning difference
- learning disability
- learning-disabled
- learning disorder
- learnt
- leasable
- lease
- leaseback
- leasehold
- leaseholder
- leaser
- leash
- leash law
- leasing
- least
- least common denominator
- least common multiple
- least of all
- least squares
- leastways
- leastwise
- leather