be in

THESAURUS

be in

be in force, be the rage, be the rule, be the thing, carry, deal in, dominate, handle, job, market, merchandise, obtain, predominate, prevail, reign, retail, rule, sell, trade in, traffic in, wholesale

ROGET THESAURUS

be in

Undertaking

VB undertake, engage in, embark in, launch into, plunge into, volunteer, apprentice oneself to, engage, contract, take upon oneself, take upon one's shoulders, devote oneself to, take up, take in hand, tackle, set about, go about, set to, fall to, set to work, launch forth, set up shop, put in hand, put in execution, set forward, break the neck of a business, be in, for, put one's hand to, put one's foot in, betake oneself to, turn one's hand to, go to do, begin one's, broach one's, institute one's, put one's hand to the plow, lay one's hand to the plow, put one's shoulder to the wheel, have in hand, have many irons in the fire.