增

to increase / to expand / to add

(bound form) to increase; to augment; to add to

Tu (ethnic group) / surname Tu

earth / dust / clay / local / indigenous / crude opium / unsophisticated / one of the eight categories of ancient musical instruments 八音[ba1 yin1]

surname Zeng

once / already / ever (in the past) / former / previously / (past tense marker used before verb or clause)

great- (grandfather, grandchild etc)