There is no need to worry about coming from a family of low rank.
Written forms
微賤Usage50%
Standard kanji form for this word.
びせんUsage50%
微賎
irregular kanji usage
Variant with irregular kanji usage; 賎 is a less common form of 賤.
Etymology
Compound of 微 (bi, 'slight, humble') and 賤 (sen, 'lowly, base'). The exact historical derivation is uncertain, but the word follows classical Chinese-influenced word formation.