Reduplication

Tengthah-suu (重疊辭 reduplication)

koaan, koankoaan, koaarn'koankoaan

Duples (A'A)

You can repeat monosyllable A to get A'A, for some emphasis, to mean "quite" or "very".

Triplication

You can repeat a syllable A three times (A"A'A) to mean extremely A. Generally, the first syllable undergoes tone change to the rare rising tone (#6; see Tones of Taiwanese). (Note that different rules are currently found at Taiwanese Hokkien#In_triplicated_adjectives)

Køq khvoax

Zhamkhør