The phrase "be with child" is an old-fashioned expression meaning to be pregnant. However, there are many other synonyms that can be used to describe pregnancy. Some commonly used phrases include "expecting a baby," "pregnant with a child," or simply "pregnant." More informal phrases include "knocked up," "in the family way," or "in the oven." More euphemistic phrases for pregnancy include "bun in the oven," "on the way," or "having a baby on board." However the phrase is expressed, it is a joyous occasion and a blessing for many families and expectant mothers.