Synonyms for Restriction:

n.

range. regulation, freeze, marginalization, containment, circumscription, limited, demarcation. cramp, check, trammel, curb. act (noun)
confinement, limitation.
constraint (noun)
stipulation.
control (noun)
containment.
hindrance (noun)
drawback, catch, blockage, interruption, obstruction, burden, restraint, impediment, damper, clog, impedance, constraint, jam, stop, snarl, stoppage, disadvantage, drag, deterrent, bung, constipation, resistance, hurdle, complication, congestion, handicap, bafflement, brake, tangle, hindrance, stay, impasse, encumbrance, inhibition, barrier, delay, obstacle, crimp, blockade, bottleneck, dam, mire, snag, frustration, opposition, choke, entanglement, entrapment, block, plug.
limit (noun)
constraint, edge, border, brink, inhibition, confines, cutoff, circumscription, rim, stipulation, control, handicap, restraint, bounds, cramp, acme, deadline, terminus, curb, brake, maximum, boundary, catch, zenith, containment, apex, extremity, limitation, regulation, stricture, fringe, confinement, limit, check, demarcation, end.
muscle spasm (noun)
cramp.
prohibition (noun)
ban, curtailment, Disallowance, rejection, prevention, suppression, prohibition, disapproval, bar, forbiddance, injunction, refusal, denial, preclusion.
refusal (noun)
forbiddance.
restraint (noun)
constriction, stricture, bondage, bridle, shackle, Detainment, confinement, detention, control, tether, collar, leash.
secrecy (noun)
secrecy, confidentiality, Covertness, stealth.

Other synonyms:

circumscription. cramp, regulation, curb, demarcation, containment. trammel. check, range. freeze. Other relevant words:
curb, cramp, limited, check, containment, freeze, demarcation, stipulation, trammel, marginalization, regulation, circumscription, range.

Usage examples for restriction

  1. He said yes, but with this restriction that the Prince of Orange should be comprised in the treaty, which might yet cause some obstruction in it. – A Journal of the Swedish Embassy in the Years 1653 and 1654, Vol II. by Bulstrode Whitelocke
  2. The Prince de Conti and Madame de Longueville, prompted by M. de La Rochefoucault, were for an alliance with Spain, in a manner without restriction – The Memoirs of Cardinal de Retz, Complete by Jean Francois Paul de Gondi, Cardinal de Retz
  3. I wondered at first at this restriction but when Randolph afterwards communicated to me his conversation of the 24th, I became satisfied it was a small sacrifice to the opinion of Hamilton. – Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson by Thomas Jefferson