The verb transact is almost always used with the word "business." To transact business is to conduct it, as when a shopkeeper sells groceries to a customer.

All kinds of business owners and workers transact business, just by following their usual routines of selling, buying, investing, trading, or anything else they do to carry out their work. Shoppers also participate in transacting business — a purchase can also be called a transaction. The Latin root word, transactus, means "to drive through or accomplish."

Definitions of transact

v conduct business

transact with foreign governments”
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deal, sell, trade
do business; offer for sale as for one's livelihood
turn over
do business worth a certain amount of money
do business with a bank or keep an account at a bank
sell or promote the sale of (illegal goods such as drugs)
black marketeer
deal on the black market
use or deal in (as of stock or commercial transaction) in a pyramid deal
deal in a market
hawk, huckster, monger, peddle, pitch, vend
sell or offer for sale from place to place
Type of:
act together or towards others or with others

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