have to

Also, have got to. Be obliged to, must. For example, We have to go now, or He has got to finish the paper today. The use of have as an auxiliary verb to indicate obligation goes back to the 16th century; the variant using got dates from the mid-1800s.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

Related Words for have to

need, have, must, behooves

Examples from the Web for have to

Historical Examples of have to

You git that Owens if you have-to haze him to hell and back!
The Flying U's Last Stand
B. M. Bower