frost, n. [rime], hoarfrost; uncordiality, unsociability, [reserve].
frosting, n. icing.
frosty, a. [cold], [icy]; uncordial, [distant], aloof, [unsociable]; pruinose.
froth, n. spume, [foam].
frothing, n. [rant].
frothy, a. spumy, [foamy], spumous; [trivial], [frivolous], unsubstantial.
froward, a. [refractory], [unyielding], [disobedient], insubmissive, untoward.
frown, n. [scowl], [lower], glower.
frowning, a. [scowling], [lowering], glowering, [stern].
frowzy, a. [strong-smelling], [fetid], [rank], [musty], [rancid], malodorous; [slatternly], [disordered], [untidy], [disheveled], [dowdy].