妨 (fāng) is a bound morpheme (b.f.) that appears in compound words like 妨碍 (hinder, obstruct) and 妨害 (harm, damage). It cannot stand alone as a word — you'll always see it combined with another character to form a verb. Its core meaning is 'to hinder, to impede, to obstruct'. In HSK 7 texts, you're most likely to encounter it in formal or written contexts describing obstacles or interference.