The spelling of "Sikkink" can be explained through its phonetic transcription in IPA. The first syllable "SIK" is pronounced as /sɪk/, with a short "i" vowel sound and the "k" consonant sound. The second syllable "KINK" is pronounced as /kɪŋk/, with a short "i" vowel sound followed by a nasal "ng" sound and a hard "k" sound. Thus, the spelling accurately reflects the phonetic pronunciation of the two syllables of this name.