подлесок
subsilva [ae, f];
грамотный
litteratus [a, um]
бесполезно
inutiliter; nequiquam; frustra;
absurdus [a, um]; surdus (res surdae ac sensu carentes); ineptus [a, um]; insulsus [a, um] ; stolidus [a, um] ; inanis [e] (litterae; verborum torrens);