We have studied concerning the formation of derivatives by the addition
of suffixes. Derivatives are also formed by the addition of prefixes.
You remember that a prefix is a syllable which is placed before a simple
word to form the derivative. Among the most common of these prefixes are
_in_, _un_ and _mis_. The prefix _in_ used with an adjective or adverb
means _not_; for example, _insane_ means _not_ sane; _incorrect_ means
_not_ correct, etc.
The prefix _in_ used with a noun means _lack of_; for example,
_inexperience_ means _lack of_ experience; _inability_ means _lack of_
ability, etc.
In words beginning with _m_ or _p_, _in_, meaning _not_ or _lack of_, is
changed to _im_. This is done for the sake of euphony. The _n_ does not
unite readily with the sound of _m_ or _p_. So we do not say _inmodest_
and _inpartial_, but _immodest_ and _impartial_.
The prefix _un_, used with participles, means _not_; for example,
_unprepared_ means _not_ prepared; _unguarded_ means _not_ guarded, etc.
The prefix _un_ used with verbs, means to take off or to reverse; for
example, _uncover_ means to take off the cover; _untwist_ means to
reverse the process of the twisting.
The prefix _un_ used with adjectives means _not_; for example,
_uncertain_ means _not_ certain; _uncommon_ means _not_ common.
The prefix _mis_ used with nouns or verbs, means _wrong_. For example,
_mistreatment_ means _wrong_ treatment; _to misspell_ means to spell
_wrong_.
Add the prefix _in_ to the nouns given in Monday's list; add the prefix
_in_ to the adjectives given in Tuesday's list; add the prefix _im_ to
the adjectives and nouns in Wednesday's lesson; add the prefix _un_ to
the participles and adjectives in Thursday's lesson; add the prefix _un_
to the verbs in Friday's lesson, and add the prefix _mis_ to the nouns
and verbs in Saturday's lesson.
+Monday+
Tolerance
Frequency
Competence
Efficiency
Coherence
+Tuesday+
Convenient
Expedient
Famous
Adequate
Solvent
+Wednesday+
Pertinent
Morality
Patience
Moderate
Pious
+Thursday+
Balanced
Biased
Gracious
Stable
Solicited
+Friday+
Burden
Veil
Fasten
Screw
Furl
+Saturday+
Construe
Apprehension
Inform
Guide
Judge