Word Knowledge - Lesson III
When the suffix -etic is added to a multi-syllabic word ending with the letter y, you have to change the spelling of the root word.
So then, poetry becomes poetic, energy becomes energetic, and sympathy becomes sympathetic.
Note also that the suffix -etic often changes a noun into an adjective, as did the suffix -ous.
Most words standing with the suffix -ly are adverbs.
As you read previously, a prefix is an affix that is attached at the beginning of a word. The Latin prefix trans- adds the meaning “across” to the root.
For example, in transport, the Latin root is port, which means “to carry.” Thus, transport means “to carry across” or “to take from one place to another.”
In transaction, the noun action means “a thing done.” The addition of the prefix trans- produces a new meaning: an exchange (which is “a thing done across [or between] two or more people”).
And finally, transatlantic has the meaning “across the Atlantic Ocean.”
We already read that the meaning of a root or base word can be changed by adding an affix. So then, the suffix -ic, which means “having to do with” added to the noun atom, changes it into the adjective atomic, which means “having to do with an atom.” Similarly, the word heroic means “having to do with a hero,” and the word scenic means “having to do with a scene.” Note that in all of these words, the suffix -ic changes a noun into an adjective.
Another affix that changes nouns into adjectives is the suffix -al. For example, the noun person becomes the adjective personal. Likewise, the noun music becomes the adjective musical. On the other hand, note how this same suffix (-al) changes the verb survive into a noun: survival – so be careful! Don't get lazy or stop thinking, and . . . never take anything for granted!