Juliet's parents attempt at forcing Juliet to marry Paris. Her father, Lord Capulet, says to her in Act III, scene v, lines 197-198, "But, an you will not wed, I'll pardon you./ Graze where you will, you shall not house with me." Lord Capulet is basically stating that should Juliet refuse marriage to Paris, he will "excuse" her to find another home and for her to go where she wants because she won't live in his home.
Lord Capulet also states in the same scene, lines 202-204, the following: "An you be not, hang, beg, starve, die in the streets,/ For by my soul, i'll ne'er acknowledge thee,/ Nor what is mine shall never do thee good." In other words, if Juliet does not marry Paris, he will no longer claim her as his daughter and would let her die in the streets.
When Juliet pleas with her mother, the reply from lines 212-213 are "Talk not to me, for I"ll not speak a word./ Do as thou wilt, for I have done with thee." Lady Capulet refuses to come to the aid of Juliet and therefore by inaction sides with her husband.
Overall, while Juliet is not physically forced to marry Paris, her parents use all means to unkindly persuade her to make the choice by stripping her of her name, home, and family if she were to choose not to.