unoccupied (adj.)

• abandoned
• available
• blank
• calm
• deserted
• empty
• empty-headed
• fallow
• fatuous
• forsaken
• free
• godforsaken
• idle
• inane
• jobless
• leisured
• lumpen
• oblivious
• off
• open
• otiose
• passive
• relaxed
• retired
• spare
• thoughtless
• tranquil
• unemployable
• unemployed
• unfilled
• uninhabited
• unmanned
• unpeopled
• unpopulated
• unreasoning
• untenanted
• untended
• unthinking
• vacant
• vacuous