i am in trouble with similar words in English. not only because of EnglishTurkish dictionaries but even in English English dictionaries i can find the clues to differ similar words.
some examples;
cry,weep,wail ( and maybe sob but as far as i know it happens with hiccups. am i right? )
wish,beg,implore,bessech,plead,entreat
assert,claim
these came to my mind now.but i encounter with hundreds of them. is there a dictionary or source to differ similar words?what is your advice?