pace, rate - the relative speed of progress or change; "he lived at a fast pace"; "he works at a great rate"; "the pace of events accelerated"

haste, hastiness, hurriedness, hurry, precipitation - overly eager speed (and possible carelessness); "he soon regretted his haste"

acceleration - an increase in speed; "modern science caused an acceleration of cultural change"

deceleration, retardation, slowing - a decrease in speed; "the deceleration of the arms race"

execution speed - (computer science) the speed with which a computational device can execute instructions; measured in MIPS

graduality, gradualness - the quality of being gradual or of coming about by gradual stages

immovability, immovableness - no capable of being moved or rearranged

lodgement, lodging, lodgment - the state or quality of being lodged or fixed even temporarily; "the lodgment of the balloon in the tree"

citadel, bastion - a stronghold into which people could go for shelter during a battle

blockhouse - a stronghold that is reinforced for protection from enemy fire; with apertures for defensive fire

defensive structure, defense, defence - a structure used for defense; "the artillery battered down the defenses"

hold - a stronghold

donjon, dungeon, keep - the main tower within the walls of a medieval castle or fortress

redoubt, sconce - a forbidding stronghold