open door
noun
1
: a recognized right of admittance : freedom of access
also : a policy providing such freedom
2
: a policy giving opportunity for commercial relations with a country to all nations on equal terms
open-door
ˈō-pən-ˈdȯr 
adjective 
Word History
First Known Use
1526, in the meaning defined at sense 1
open doors
noun
as in welcome mats
Synonyms & Similar Words
Relevance
- welcome mats
- qualifications
- certifications
- approvals
- permissions
- doors
- authorizations
- admissions
- entries
- entrees
- accesses
- entrances
- doorways
- keys
- passports
- entrées
- gateways
- tickets
- accessions
- ingresses
- admittances
Antonyms & Near Antonyms
- discharges
- dismissals
- expulsions
- removals
- ousters
- rejections
- ejections