Quenya 

picina

adjective. little

A word appearing as pikina or pinke following the word pia “little” in a list of “large & small” words from 1968 (PE17/115). It is probably derived from the root ᴹ√PIK (Ety/PIK).

pia

adjective. little

A list of “large & small” words from around 1968 had pia “little” derived from √PEYE (PE17/115), probably from primitive ✱peya with eya > ia. This was followed by words pikina, pinke, and pitya, all probably derived from a different root ᴹ√PIK (Ety/PIK).

Neo-Quenya: I think the root √PEY was probably a transient idea, quickly reverted back to √PIK. For purposes of Neo-Quenya I prefer other words over pia “little”.

nitya

adjective. little

A word appearing only as an element in the name of Nityafinwë (PM/365). It was probably derived √NIK “small”, with ✱nikya becoming nitya because ky became ty in (Ancient) Quenya.

Conceptual Development: There seem to be earlier iterations of this word that began with m instead of n. The Qenya Lexicon of the 1910s had ᴱQ. minwa “small” under the early root ᴱ√MINI (QL/61). The Early Qenya Grammar had ᴱQ. mitya “little” (PE14/48, 80), while the contemporaneous English-Qenya Dictionary had ᴱQ. mitya “little (in quantity)” (PE15/74). The Etymologies of the 1930s had ᴹQ. mitsa or minte under the root ᴹ√MIT “small”, but this entry was deleted (EtyAC/MIT).

pia

little

pia adj. "little" (PE17:115); variants picina ("k"), pincë ("k"), pitya

pincë

adjective. little

pitya

little

#pitya adj. "little" in Pityafinwë, Pitya-naucor

titta

little, tiny

titta adj. "little, tiny" (TIT)