To start
commence
Allowable
permissible
To reduce or damage in quality or worth.
deteriorate
Possessing a friendly manner or temperament.
genial
Choice of one of two options.
alternative
Watch kept while others are normally sleeping.
vigil
To originate or send out from a source.
emanate
To firmly plant or establish.
engraft
Bottomless pit
abyss
To lure or entice by deception.
decoy
Facial expression
countenance
Watchful for danger or error.
vigilant
Planned or accomplished usually by many people.
concerted
Persistent in harshness or severity.
relentless
Not aggravating but not interesting.
bland
Incapable of change
invariable
To judge or conclude based on guesswork.
conjecture
To keep something desirable visible but out of reach.
tantalize
Daringly, often recklessly adventurous.
audacious
Exceptionally steep
precipitous