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!

Gnomish

giothrin

adjective. embryonic

A word appearing as G. giothrin “embryonic” in the Gnomish Lexicon, an adjectival form of G. gioth “embryo” from the early root ᴱ√giu̯i (GL/39).

Neo-Sindarin: I would update this word to Neo-Sindarin ᴺS. gythren, adjectival form of updated ᴺS. gŷth, based on the later sound change whereby iu > ȳ.