1) engaged to be married (betrothed)
2) enjoying, engaged in, competition (competitive)
3) a man to whom a woman is engaged to be married (fiance)
4) a woman to whom a man is engaged to be married (fiancee)
5) a person engaged in a guerrilla war (fighting by small groups of civilians, usually for a political cause) (guerrilla)
6) a person engaged in a lawsuit (litigant)
7) filled with, engaged in, mischief (mischievous)
8) of, engaged in, medicines (pharmaceutical)
9) not connected or associated with a particular person, group, organization etc; independent; not married or engaged to be married (unattached)
having a lot of work to do
engaged, at work
extremely busy with and interested (in an activity, book etc)
preoccupied; attentive to
(of looks) eager; earnest; (of a person) having, showing, serious and constant desire or attention
determined, resolute
so deep in thought, so carried away by feelings, that one is unaware of other things
absorbed, fascinated
(of a person) legally or morally having to carry out a duty, care (for a person, thing); involving the obligation to make decisions for others and bear the blame for their mistakes
accountable, in charge
concerning a person, machine etc that works; suitable for work; able to be used
active, occupied