tighten up

Definitions of tighten up
1

v restrict

Synonyms:
constrain, stiffen, tighten
Type of:
bound, confine, limit, restrain, restrict, throttle, trammel
place limits on (extent or access)

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.