Something that does not vary; a constant.
Constant.
Not variable; unalterable; uniform; always having the same value.
That cannot undergo inflection, conjugation or declension.
A toy consisting of a spheroidal or cylindrical spindle having a circular groove in which string is wound; it is used by holding the string in the fingers and reeling the spindle up and down by movements of the wrist.
A cloth rosette formed by gathering the outside edge of a circle of fabric in toward the centre using a running stitch.
Someone who vacillates.
A dogfighting maneuver involving the attacker temporarily exchanging altitude for airspeed, or vice versa, in order to rapidly catch up with the defender or to prevent an overshoot.
A volatile market that moves up and down.
A foolish, annoying or incompetent person.
To vacillate; to move up and down.