不大

不大	bù dà	not very (clear, far away etc); not too / not often; infrequently
不	bù	no; not so / (bound form) not; un-
大	dà	big; large; great / older (than another person) / eldest (as in 大姐) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)
大	dài	see 大夫