Middle Primitive Elvish
linkwi
root. *wet
mis
root. *wet
misik
root. *wet
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
An unglossed root in The Etymologies of the 1930s with no derivatives of its own but two extended roots ᴹ√MISIK and ᴹ√MISID; probably the sense of the base root was “✱wet” (EtyAC/MIZD). It was also Tolkien’s intent that this ᴹ√MIS² be the basis for ᴹ√MITH “✱grey, mist” by way of blending with ᴹ√KHITH “mist, fog” (EtyAC/MITH). Extended ᴹ√MISIK or ᴹ√MISK had derivatives ᴹQ. miksa/N. mesg “wet” (Ety/MISK) and extended ᴹ√MISID or ᴹ√MIZD had various different meanings in derived languages: ᴹQ. miste “fine rain” vs. N. mîdh “dew” vs. Dor. mîd “moisture” (Ety/MIZD). The root ᴹ√MIZDI also appeared in both the first and second versions of Tengwesta Qenderinwa from the 1930s (TQ1: PE18/43) and around 1950 (TQ2: PE18/93).
Note that in the Qenya Lexicon of the 1910s there was a root ᴱ√MISI “mingere [Latin = urinate]” with a derivative ᴱQ. mis “urine” (QL/62); this might have been a precursor to 1930s ᴹ√MIS² “✱wet”.