WordNet sense 1 (of trade unions):

union

WordNet sense 2 (provided with shutters or shutters as specified; often used in combination):

shuttered

WordNet sense 3 (subject to restriction or subjected to restriction):

restricted

WordNet sense 4 (not having an open mind):

unsympathetic

WordNet sense 5 (not receptive):

unreceptive

WordNet sense 6 (closed in or surrounded or included within):

enclosed

WordNet sense 7 (used especially of mouth or eyes):

shut

WordNet sense 8 (not open):

unopen