broaden

v. make wider; be made wider

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Verb
1. make broader; "broaden the road"
(hypernym) widen, extend
2. extend in scope or range or area; "The law was extended to all citizens"; "widen the range of applications"; "broaden your horizon"; "Extend your backyard"
(synonym) widen, extend
(hypernym) increase
(verb-group) extend, expand
3. vary in order to spread risk or to expand; "The company diversified"
(synonym) diversify, branch out
(hypernym) change, alter, vary
4. become broader; "The road broadened"
(hypernym) increase

v. rozšířit (se)

Czas. poszerzać (się)

(v. t.)
To make broad or broader; to render more broad or comprehensive.
  

(a.)
To grow broad; to become broader or wider.