The exact nature of stress in PGH is a subject of heated debate in linguistic communities, but the majority agree that it was likely a pitch-accent language in some capacity, where stressed syllables (represented by ◌́ in typical reconstruction notation) are said to have a high tone and unstressed are said to have a low tone. A plurality of scientists further conjecture that stress was dynamic and originally non-phonemic, being a combination of both pitch and another quality usually said to be either volume or place of articulation. However many have pointed out that the majority of scientists in this party are native speakers of Hyudrontic languages, all languages of which have regularly defined non-phonemic stress and many have it indicated by volume alone, and are hence likely biased.
- Multisyllabic words must feature an equal number of stressed and unstressed syllables, or at most one unpaired
- No word may start with *a
- A word may start with *j only if followed by *ü
Compound words in PGH have a strict format to them & their creation. Namely, while a variety of stems may be included in compounding, all compounds are nouns or occasionally numerals. Similarly, the first stems in the compound typically acts as somewhat of a descriptor to the last stem, the head, which is often but not necessarily a noun itself. If a multisyllabic stem is to be compounded, typically only the first syllable of the stem is used in the compound which will most often take its place as again the first or near-first syllable of the compound, however there is the case of only the last syllable being taken from the stem and used finally or medially in the compound. Compounds comprised of multiple multisyllabic stems will either take the form of 1S-1S-1S-...-LS-LS-LS (1S and LS being the first and last syllables of their respective stems respectively) or simply compounding only the first syllable of each stem. Occasionally a multisyllabic head will remain unmodified in compounds, especially if the syllable boundary or number is ambiguous (e.g. *ǘphqa, child).
Adjectives in PGH are, in essence, nothing more than specialized components (usually monosyllabic affices) of compounds. Unlike compound nouns, however, specialized adjectives typically manifest as a head-initial parameter, with the majority (though certainly not all) being classed as suffices of the word they modify, applied to a little wider range of word classes than exclusively nouns.