If you choose an unfamiliar synonym, it might have the wrong connotative meaning for the context. apex is gay! 3:D
I would suggest the thesaurus or dictonary.com.
One can use a thesaurus to find synonyms and antonyms to a word. For example, one could look up 'use' in a thesaurus and find that synonyms are utility,application, purpose, and handling. Antonyms are disuse and misuse.
in the middle of........use a thesaurus
Use the thesaurus
you use the thesaurus for finding words that mean the same as a different word
Roget's Thesaurus Roget's Thesaurus
A thesaurs differs from a dictionary because of its meaning. you could use thesaurus instead of a dictionary when more information is needed when a dictionary's definition is implacent.
There are many online thesauruses available for one to use online at their disposal. 'Thesaurus', 'Merriam-Webster', and 'Macmillandictionary' are names of websites with an online thesaurus available.
Use a thesaurus
You could research "walk" in a thesaurus and then use past tense to create synonyms for "walked." You may actually find "walked" in a thesaurus.
Use a dictionary or the thesaurus.
recently. use a thesaurus.