nothing humiliation about not knowing what a word means XD hahaha if i should be ashamed of asking what words mean i would be nearly everyday XD (I live in UK atm, not my home country so i come across a lot of words that is still dont know)
a thesaurus is a
synonym dictionary. it works better then some soft ware and points you towards other words as well, Word has it as well as 'synonym' but its not a wide range and it doesnt give you explanations of the meanings of different words.
so definetly get one of those ^^ I got one for Dutch and English XD