The top of the kanji looks like sparsely growing grass or plants. The two 'feet' (represented by 疋 at the bottom and right) are moving apart, creating a sense of distance and making things *sparse* or *alienated* from each other.
'So' — things are SO distant and SO sparse, like there's a lack of connection or density.
Vocabulary
疎遠そえん
estranged, alienated
疎通そつう
mutual understanding, communication (often used in the negative, e.g., 'lack of communication')