The antonyms for the phrase "choice of word" are limited vocabulary, poor diction, and deficient style. When people have a limited vocabulary, they tend to use the same words repeatedly, which can make their language sound repetitive and boring. On the other hand, poor diction refers to choosing the wrong words, using slang or informal language, which can make the communication unclear and confusing. Meanwhile, having a deficient style means that individuals lack the eloquence and finesse needed to convey their ideas effectively. Using the right words is essential when speaking and writing, and it can make all the difference in how thoughts are perceived by others.