Definition of "unaspirated"

Phonetically, in Malay, initial /t/ and /p/ are never aspirated; only /p, b, t, d, k, g/ occur as final stops and are usually unreleased and unaspirated[.]

2019, Li Huang, James Lambert, “Another Arrow for the Quiver: A New Methodology for Multilingual Researchers”, in Journal of Multilingual and Multicultural Development, page 10