another's eyes; how others see one; appearance to others
Refers to how one is viewed by other people, often used in the set phrase よそ目に to mean 'in the eyes of others' or 'to the casual observer'. The phrase よそ目には can introduce a contrast between outward appearance and reality.
To the casual observer they seem happy, but in reality they have many worries.
彼はよそ目を気にしすぎる。
He cares too much about what others think.
Standard kanji spelling; the reading よそめ is unambiguous.
Alternate kanji spelling; less common but still encountered.
Compound of よそ (elsewhere, another place) and 目 (eye). The exact historical derivation is uncertain, but the combination naturally yields the meaning 'another's eyes' or 'how one appears to others'.