矮小 (ǎi xiǎo) means “short and small; low and small; undersized”. It is an HSK 4 Chinese word in the HSK 3.0 vocabulary.
Practice each character:
那棵树很矮小。
Nà kē shù hěn ǎixiǎo.
That tree is short and small.
Updated: 2026-07-18