Search Result for "tighten up":
Wordnet 3.0

VERB (1)

1. restrict;
- Example: "Tighten the rules"
- Example: "stiffen the regulations"
[syn: stiffen, tighten, tighten up, constrain]



WordNet (r) 3.0 (2006):

tighten up
    v 1: restrict; "Tighten the rules"; "stiffen the regulations"
         [syn: stiffen, tighten, tighten up, constrain]