Period just before dark
Period leading up to
Period longer than a 12-Down
Period marked by copper use
Period marked by increased smelting
Period marked by smelting of copper
Period named for a genre
Period named for a monarch, perhaps
Period named for a music genre
Period named for an earth goddess
Period named for an element
Period named for something
Period neighbor, on a keyboard
period of 100 years
Period of 100 yrs.
period of 24 hours
Period of 60 minutes
Period of a billion years
Period of a king's reign
Period of a renter's agreement
Period of a revolution?
Period of abstinence
Period of abstinence for firm
Period of advancing glaciers
Period of anticipation
Period of attack
period of being a novice
PERIOD of being in flower
Period of British naval supremacy, and others
Period of British rule in India
Period of business for official body
Period of calm
period of conflict
period of control
Period of crisis
PERIOD of dark
Period of darkening
Period of darkness
Period of Decline
Period of decline
Period of decreased income at ski resorts, e.g.
Period of development
Period of distinction
Period of distraction
Period of douze mois
Period of duty
period of economic difficulty when little is being bought or sold
Period of economic growth
Period of effectiveness
Period of existence
PERIOD of extension
PERIOD of fasting
period of fasting and sweating in a tub, intended as a cure for disease
Period of fasting ended by Eid al-Fitr
period of five years
Period of focusing on oneself
Period of forgiveness
Period of frigid temperatures
Period of future bliss
Period of fuzzy sweaters?
Period of George W. Bush's presidency
Period of government
Period of gradual decline
Period of great climate change
Period of great glaciation
Period of great popularity
Period of great prosperity
Period of great success
Period of greatest success
Period of group activity, slangily
Period of growth
Period of high birthrate
Period of highest sales
Period of historic time
Period of history
Period of holding
period of hot weather
Period of human history that began about 3,000 years ago
Period of ignorance
Period of immaturity
Period of imminent danger
Period of inactivity
Period of increased births
Period of indulgence
PERIOD of instruction
Period of investor confidence
period of keeping awake to pray
period of life
Period of life associated with wisdom
period of life before birth
Period of life when one is old and weak
period of light
Period of literary style, e.g.
Period of low activity
Period of major fighting
Period of many years
Period of metalwork advances
Period of mourning (var.)
Period of mourning, e.g.
period of notable events
Period of note
Period of occupancy
PERIOD of office
Period of Office aide (abbr.)
PERIOD of one hundred years
PERIOD of one thousand years
Period of one's greatest productivity
Period of one's prime
Period of panic
Period of penitence
Period of petitioning
Period of play in curling
Period of poor performance
Period of power
Period of powerlessness
Period of prayer
PERIOD of pregnancy
period of prehistory
period of preperation
period of progress
PERIOD of prosperity
Period of quiet
Period of radio silence
Period of rapid growth
Period of rationing: Abbr.
Period of reduced economic activity
Period of reduced productivity
Period of relaxation
Period of relief
period of repose
Period of rest
Period of revolution?
Period of rule
Period of sacrifice
Period of sacrifice prior to Easter
Period of self-indulgence
Period of service
Period of seven days without bathing?
Period of sickness
Period of silence
period of six months
Period of sleep with dreaming
Period of slow growth
Period of stability
Period of stalled progress
period of study
Period of success on Broadway
Period of sudden growth
period of teaching
Period of telegraphy
Period of temporary inactivity
period of ten years
Period of terror induced by a brat?
Period of the Cenozoic Era
Period of the Crusades
Period of the first dinosaurs
period of thirty days' deep mourning following a death
Period of thousand years
period of three months
Period of three years
period of time
Period of time between events
Period of time between two successive governments
period of time considered as distinctive
period of time during which a person or animal may be expected to live
Period of time in history
Period of time in prison
period of time permitted for the redemption of foreign bills of exchange
Period of time served
Period of time spent at a particular job
period of time that a week
period of time that a week is divided into
period of time within which certain events are scheduled to occur
period of time within which events occur or are due to occur
period of two thousand years
period of two years
PERIOD of two-hundred years
Period of uncertainty
Period of unrestrained criticism
Period of unrestrained indulgence
Period of veinticuatro horas
Period of watchful attention
Period of watchfulness
Period of watching
Period of which the present day is near the end
Period of widespread food shortage
Period of wooing
PERIOD of work
PERIOD of year
Period of years
Period of youth before maturity
Period off the wagon
Period often named for a leader
Period often named for a president
Period often with a name
Period on a geologic time scale
Period on the throne
Period on Venus that's longer than a year on Venus (!)
Period or comma
period or cycle of three years
Period or duration
Period piece
Period pieces
Period preceding a school break
period preceding christmas
Period preceding Reagan's presidency
Period relative
period Revolution
Period right before a deadline
Period sans soleil
Period since 1957
Period since 2009
Period sometimes named after a president
Period sometimes named for a statesman
Period spawned by the Manhattan Project
Period spent at a particular job
Period spent in goal
Period spent in the slammer
period spent living as a guest in someone's home
Period spent lounging around eating junk food?
period spent together in isolation by sports team
Period studied in school
Period symptom
Period that ended with the death of Marcus Aurelius
Period that ends Nov. 3rd, requiring a shift, and letters that shift in this puzzle's theme entries
Period that may be named for a president
period Time
Period to find out more
Period to recharge alone
Period to remember
Period to turn off one's phone and catch up on TV, say
Period to usher in
PERIOD to which something ancient belongs
Period too long to measure
Period when birds and mammals appeared
Period when dinosaurs became extinct
Period when every car was a junker?
Period when forging began
Period when glaciers expand
Period when horses first appeared
Period when Lindsay ruled?
Period when Long Island was formed
Period when mammals first appeared
Period when metalworking began
Period when psychiatrists ruled?
Period when rabbits stop fighting?
Period when the ocean recedes
Period when there were dinosaurs
Period when things go poorly
Period when tribute bands thrived?