Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!

Qenya 

qa(qe)nde

adverb. in all ways, to every extent

The correlative ᴹQ. qande or qaqende “in all ways, to every extent” appeared in Demonstrative, Relative, and Correlative Stems (DRC) from 1948 (PE23/111), a combination of ᴹQ. qa(qe)- “every” and ᴹQ. -n(de) “extent”.

Neo-Quenya: For purposes of Neo-Quenya I would update this to ᴺQ. ilindë “in all degrees, to every extent” using il- “all”.