-g-

• -ng- — Default interfix for compounds with preceding stem ending in a vowel.
• -m- — for compounds with preceding stem ending in a vowel, but next stem starts with the letter ⟨b⟩ or ⟨p⟩.
• -n- — for compounds with preceding stem ending in a vowel, but next stem starts with the letter ⟨d⟩, ⟨l⟩, ⟨r⟩, ⟨s⟩, or ⟨t⟩.

From -ng (enclitic suffix).

-g- (Baybayin spelling ᜅ᜔)

1. Compound interfix, connecting the adjective stem to the noun stem, after the preceding stem ends with letter ⟨n⟩.

   Synonyms: -ng-, -n-, -m-, na, -ng, -g

   ‎daan + ‎-g- + ‎bakal → ‎daang-bakal

   ‎kababaan + ‎-g- + ‎loob → ‎kababaang-loob

   ‎kabungguan + ‎-g- + ‎balikat → ‎kabungguang-balikat

• See -g.