Gnomish
giol
adjective. fecund; conceiving, having conceived, just pregnant
giwol
adjective. fecund; conceiving, having conceived, just pregnant
giwl
adjective. fecund; conceiving, having conceived, just pregnant
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 adjective in the Gnomish Lexicon with variant forms G. giol, giwol, and giwl as well as glosses “fecund; conceiving, having conceived, just pregnant”, a derivative of the early root ᴱ√giu̯i having to do with pregnancy (GL/39). It demonstrated the Gnomish sound change of iu to io.
Neo-Sindarin: I would adapt this word as ᴺS. gŷl “fecund; having conceived” based on the Neo-Root ᴺ√GIW, since in Sindarin the sound change was iu > ȳ.