köken: Inherited from Old French, from Latin fundus. Doublet of fonds.
aile: à fond, à fond la caisse, à fond les manettes, au fond, avoir les dents du fond qui baignent, dans le fond, de fond, de fond en comble, détournement de fonds, du fond du cœur
köken: Either a Learned borrowing from French nadir, or borrowed from Spanish nadir, ultimately from Arabic نَظِير (naẓīr, “counterpart”), implying the 'opposite of' zenith.
absolute lowest point, rock bottom, very bottom · very bad situation, catastrophic situation, the abyss
köken: Compound of どん (don-, intensifier, derived from and expressing a greater degree than ど (do)) + 底 (soko, “the bottom of something, the depths of something”). The soko changes to zoko as an instance of rendaku (連濁).