SC - Confusable words Part-17
ILLUDE/ELUDE"Illude" is a very rare word, most of whose former meanings are obsolete, but which can
mean "to deceive, lead astray." But in modern usage this word is almost always used as an
error for "elude," meaning "escape, evade." Similarly, you would be better off avoiding the
word "illusive" and using the much more common word "illusory" to mean "deceptive."
"Illusive" is almost always an error for "elusive."
IMPERTINENT/IRRELEVANT"Impertinent" looks as if it ought to mean the opposite of "pertinent," and indeed it once did;
but for centuries now its meaning in ordinary speech has been narrowed to "impudent,"
specifically in regard to actions or speech toward someone regarded as socially superior.
Only snobs and very old-fashioned people use "impertinent" correctly; most people would
be well advised to forget it and use "irrelevant" instead to mean the opposite of "pertinent."
IMPLY/INFERThese two words, which originally had quite distinct meanings, have become so blended
together that most people no longer distinguish between them. If you want to avoid irritating
the rest of us, use "imply" when something is being suggested without being explicitly stated
and "infer" when someone is trying to arrive at a conclusion based on evidence. "Imply" is
more assertive, active: I imply that you need to revise your paper; and, based on my hints,
you infer that I didn't think highly of your first draft.