Show:
List 23 (1-5)
List 23 (6-10)
List 24 (1-5)
List 24 (6-10)
100

to start

commence

100

allowable

permissible

100
to reduce or damage in quality

deteriorate 

100

exceptionally steep

precipitous

200

choice of one of two options

alternative

200
to lure or entice by deception

decoy

200

facial expression

countenance

200

watchful for danger or error

vigilant

300

bottomless pit

abyss

300

persistent in harshness or severity

relentless

300

to originate or send out from a source

emanate

300

incapable of change

invariable

400
to judge or conclude based on guesswork

conjecture

400
watch kept while others are normally sleeping

vigil

400

not aggravating but not interesting

bland

400

possessing a friendly manner or temperament

genial

500

planned or accomplished usually by many people

concerted

500

to keep something desirable visible but out of reach 

tantalize

500

daringly, often recklessly adventurous

audacious

500

to firmly plant or establish

engraft