12-Letter Words Containing: _,E,I,N,S,Y

• a drug (trade names Atarax and Vistaril) used as a tranquilizer to treat anxiety and motion sickness

• operating in unison

• an antibiotic derived from tetracycline that is effective against many infections

• an instrument that indicates whether two periodic motions are synchronous (especially an instrument that enables a pilot to synchronize the propellers of a plane that has two or more engines)

• make synchronous and adjust in time or manner

• happen at the same time

• make (motion picture sound) exactly simultaneous with the action

• arrange or represent events so that they co-occur

• operate simultaneously

• cause to indicate the same time or rate

• make symmetric

• combine so as to form a more complex, product

• combine and form a synthesis