Calignosities is a challenging word to spell, with several difficult consonant clusters. The IPA phonetic transcription for this word is /kælɪɡnoʊsətiz/. The word has a soft "c" at the beginning, and "gno" is pronounced as "no," with a silent "g." The ending "-osities" is spelled with "o" before "s," which can be tricky to remember. This word refers to dark, rough areas on a surface, and its spelling is a test of one's spelling prowess.