疙里疙瘩 Origin — Chinese Character Wiki

gēligēdā

bumpy

疙 gē noun

pimple

(bound form) pimple; wart; knot or lump on the skin. See 疙瘩 gēda.
里裡 li

[infix]

(bound form) filler syllable used in certain four-character descriptive words or sounds
疙 gē noun

pimple

(bound form) pimple; wart; knot or lump on the skin. See 疙瘩 gēda.
瘩 da noun

[bound form]

(bound form) used in words like 疙瘩 gēda to mean a lump, knot, or pimple