our_, _forty_; _nine_, _ninth_; _maintain_,
_maintenance_; _please_, _pleasant_; _speak_, _speech_; _prevail_,
_prevalent_. Do not confuse the following prefixes, which have no
logical connection:

_ante-_ (before) _anti-_ (against, opposite)
_de-_ (from, about) _dis-_ (apart, away, not)
_per-_ (through, entirely) _pre-_ (before)

Exercise:

1. Write the nouns corresponding to the following verbs:
_prepare_, _allude_, _govern_, _represent_, _degrade_.

2. Write the adjectives corresponding to the following nouns
and the nouns corresponding to the following adjectives:
_desperation_, _academy_, _origin_, _ridiculous_, _miraculous_,
_grammatical_, _arithmetical_, _busy_.

3. Write the adverbs corresponding to the following adjectives:
_real_, _sure_, _actual_, _hurried_, _accidental_,
_incidental_, _grammatical_.

4. Copy the following pairs of related words or related forms
of words: _labor, laboratory_; _debate, debater_; _base,
based_; _deal, dealt_; _chose, chosen_; _mean, meant_.

5. Write each of the following words with a hyphen between the
prefix and the body of the word: _describe_, _description_,
_disappoint_, _disappear_, _disease_, _dissatisfy_, _dissever_,
_permit_, _perspire_, _prescription_, _preconceive_,
_recommend_, _recollect_, _reconsider_, _antedate_,
_antecedent_, _anticlimax_, _antitoxin_.

=Superficial Resemblances between Words=

=73. Guard against misspelling a word because it bears a superficial
resemblance, in sound or appearance, to some other word.= Most of the
words in the following list have no logical connection; the resemblance
is one of form only (_angel_, _angle_). But a few words are included
which are different in spelling in spite of a logical relation
(_breath_, _breathe_).

accept (to receive)
except (to exclude, with exclusion of)

advice (noun)
advise (verb)

affect (to influence in part)
effect (to bring to pass totally)

allusion (a reference)
illusion (a deceiving appearance)

all right
almost
already

altogether
always

alley (a back street)
ally (a confederate)

altar (a structure used in worship)
alter (to make otherwise)

angel (a celestial being)
angle (the meeting place of two lines)

baring (making bare)