1. complacency
noun
Smug; self-
satisfaction

2. improbable
adjective
Unlikely to
occur

3. incessant
adjective
unending

4. opposition
noun
Astronomical moment
when, from the point of
view for someone on Earth,
a body in the solar system
lies opposite the sun

5. palpitating
verb
throbbing

6. unfathomable
adjective
Too deep to
understand

7. vulgar
adjective
Of the common
people

8. latter
adjective
recent

9. heath
noun
Open wasteland

10. insensible
adjective
unconscious

11. extra-terrestrial
adjective
From beyond
planet Earth

12. impediment
noun
hindrance

13. excavations
noun
digging
operations

14. contemplated
verb
proposed

15. inarticulate
adjective
Not
understandable

16. petrified
adjective
terrified

17. appendage
noun
limb attached
to a body

18. tumultuous
adjective
turbulent

19. fungoid
adjective
Like a fungus

20. aperture
noun
opening; hole