-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), (s), or (t).

From -ng (“enclitic suffix”).

…g… or …g-…

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

• Tagalog words interfixed with -g-