フク, おお.う, くつがえ.す, くつがえ.る
capsize, cover, shade, mantle, be ruined
JLPT1 G7 S18 F1378
As per 復# (double back) + 襾 cover → boat that is blown back in a breeze and overturns, becoming covered in water → *capsize*; *turn over*; *overturn*; *turn back*. Associated and extended meanings include *overthrow*, *overrule* and *disprove*, as well as *cover* and *spread over*.
[Full Kanji Etymology List]