4. im _mature_, ripe
5. im _mense_, measure
6. im _merse_, plunge
7. im _mort_ al, death
8. im _mut_ able, change
9. im _pel_, drive
10. im per _vi_ ous, way
11. im _pious_, reverent
12. im _port_, carry
13. im _pose_, put
14. im _pulse_, drive
15. im _pun_ ity, punish
16. in _carn_ ate, flesh
17. in _clem_ ent, mild
18. in _cognito_, known
19. in _clude_, shut
20. in _crease_, grow
21. in _cred_ ible, believe
22. in _cur_, run
23. in _dorse_, back
24. in _duce_, lead
25. in _del_ ible, rub out
26. in _dent_, tooth
27. in _evit_ able, avoid
28. in _fid_el, faithful
29. in _fant_, speak
30. in _grate_, thankful
31. in _hale_, breathe
32. in _ject_, throw
33. in _nate_, born
34. in _nov_ ate, new
35. in _sect_, cut
30. in _spect_, look
37. in _toxic_ ate, poison
38. in _trude_, thrust
39. in _vade_, go
40. in _vert_, turn

NOTE.--In defining the words in this list choose that meaning of the
prefix from the four given above (_in_, _into_, _on_, _not_) which is
most suitable; thus: _imbibe_ means to drink _in_; immature, _not_
ripe; immerse, to plunge _into_; indorse, to write _on_ the back of.

2. An _illiterate_ person is one _not_ familiar with _letters_; one
who has little or no learning.

5. Literally, anything is _immense_ when it can _not_ be _measured_;
of vast extent.

7. _Immortal._ _Not_ liable to _death_.

10. Having _no way through_ (per = through); as, cloth which is
_impervious_ to water; waterproof.

14. An _impulse_ is a sudden mental motive or feeling which tends to
_drive_ one _on_ to say or do something.

15. _Not_ liable to _punishment_; freedom from the bad consequences
which usually result from an act; as, the magician could eat fire with
_impunity_.

16. _In_ the _flesh_; as Christ was the _incarnate_ Son of God.

17. _Not mild_, but harsh and severe; as _inclement_ weather.

18. _Not known_; under an assumed name; disguised; as a nobleman
traveling _incognito_.

21. A story is _incredible_ when it is _not_ capable of being
_believed_; unworthy of belief.

26. _Indent._ To cut _into_ points like a row of _teeth_.

29. _Infant._ A young babe (_not_ yet able to _speak_).

35. _Insect._ A small animal apparently _cut into_ segments.

40. _Invert._ To _turn_ the outside _in_; to place in a contrary way.

#ob# = against, in the way of.

(_oc_, _of_, _op_, are euphonic variations of _ob_.)

1. ob _ject_, throw
2. ob _loqu_ y, speak
3. ob _sta_ cle, stand