갉아먹다

• Liaison (연음) — A final consonant moves over to the next syllable when that one starts with ㅇ.
• Double final consonant (겹받침) — Only one of the two final consonants is said (닭 → [닥]).
• Tensing (경음화) — ㄱ ㄷ ㅂ ㅅ ㅈ after a ㄱ ㄷ ㅂ sound become tense (ㄲ ㄸ ㅃ ㅆ ㅉ).

Standard pronunciation of the word on its own. Sounds can shift a little inside a sentence.