A rate (usually rapid) at which something happens.

synonyms: speed, swiftness.

Roget 666: refuge, sanctuary, retreat, fastness; acropolis; keep, last resort; ward; prison etc. 752; asylum, ark, home, refuge for the destitute; almshouse^†; hiding place etc. (ambush) 530; sanctum sanctorum [Lat.] etc. (privacy) 893.    roadstead, anchorage; breakwater, mole, port, haven; harbor, harbor of refuge; seaport; pier, jetty, embankment, quay.    covert, cover, shelter, screen, lee wall, wing, shield, umbrella; barrier; dashboard, dasher [U.S.].    wall etc. (inclosure) 232; fort etc. (defense) 717.    anchor, kedge; grapnel, grappling iron; sheet anchor, killick^†; mainstay; support etc. 215; cheek etc. 706; ballast.    jury mast; vent-peg; safety valve, blow-off valve; safety lamp; lightning rod, lightning conductor; safety belt, airbag, seat belt; antilock brakes, antiskid tires, snow tires.    means of escape etc. (escape) 671; lifeboat, lifejacket, life buoy, swimming belt, cork jacket; parachute, plank, steppingstone; emergency landing.    safeguard etc. (protection) 664.    ... show more

Dutch: gang, gangetje, snelheid, tempo, vaart, vaartje

The quality of being fixed in place as by some firm attachment.

synonyms: fixedness, fixity, fixture, secureness.

Dutch: kleurechtheid

A strongly fortified defensive structure.

synonym: stronghold.

Roget 717: defense, protection, guard, ward; shielding etc. v.; propugnation^†, preservation etc. 670; guardianship.    area defense; site defense.    self-defense, self-preservation; resistance etc. 719.    safeguard etc. (safety) 664; balistraria^†; bunker, screen etc. (shelter) 666; camouflage etc. (concealment) 530; fortification; munition, muniment^†; trench, foxhole; bulwark, fosse^†, moat, ditch, entrenchment, intrenchment^†; kila^†; dike, dyke; parapet, sunk fence, embankment, mound, mole, bank, sandbag, revetment; earth work, field-work; fence, wall dead wall, contravallation^†; paling etc. (inclosure) 232; palisade, haha, stockade, stoccado^†, laager^†, sangar^†; barrier, barricade; boom; portcullis, chevaux de frise [Fr.]; abatis, abattis^†, abbatis^†; vallum^†, circumvallation^†, battlement, rampart, scarp; escarp^†, counter-scarp; glacis, casemate^†; vallation^†, vanfos^†.    buttress, abutment; shore etc. (support) 215.    breastwork, banquette, curtain, mantlet^†, bastion, redan^†, ravelin^†; vauntmure^†; advance work, horn work, outwork; barbacan^†, barbican; redoubt; fort-elage [Fr.], fort-alice; lines.    loophole, machicolation^†; sally port.    hold, stronghold, fastness; asylum etc. (refuge) 666; keep, donjon, dungeon, fortress, citadel, capitol, castle; tower of strength, tower of strength; fort, barracoon^†, pah^†, sconce, martello tower^†, peelhouse^†, blockhouse, rath^†; wooden walls.    [body armor] bulletproof vest, armored vest, buffer, corner stone, fender, apron, mask, gauntlet, thimble, carapace, armor, shield, buckler, aegis, breastplate, backplate^†, cowcatcher, face guard, scutum^†, cuirass, habergeon^†, mail, coat of mail, brigandine^†, hauberk, lorication^†, helmet, helm, bassinet, salade^†, heaume^†, morion^†, murrion^†, armet^†, cabaset^†, vizor^†, casquetel^†, siege cap, headpiece, casque, pickelhaube, vambrace^†, shako etc. (dress) 225.    bearskin; panoply; truncheon etc. (weapon) 727.    garrison, picket, piquet; defender, protector; guardian etc. (safety) 664; bodyguard, champion; knight-errant, Paladin; propugner^†.    bulletproof window.    hardened site.    ... show more

Dutch: bolwerk, fort
Polish: twierdza, forteca