轻声

1. in a soft voice; softly

♦ ~低语 speak softly; whisper

2.语音neutral tone

♦ 普通话中的“了、着、的”等虚词和做后缀的“子、头”等字都念~。 In putonghua, particles like le, zhe, and de and suffixes like zi and tou are all in the neutral tone (or are all toneless).