erection, n. [building], [raising], construction.
erosion, n. [corrosion], eroding.
err, v. misjudge, [mistake], [blunder]; [deviate], [sin].
errand, n. [mission], commission.
erratic, a. [nomadic], [wandering]; [eccentric], [fanciful].
erring, a. peccable, [sinful], [fallible], [weak]. Antonyms: impeccable, [infallible], inerrable.
erroneous, a. [false], [incorrect], [untrue], mistaken, [inaccurate], [wrong].
error, n. [mistake], [inaccuracy], [blunder], misapprehension, falsity, misconception. Associated words: [fallibility], [infallibility], [fallible], errant, errancy, inerrancy, inerrability.
errors, n. pl. errata; sing. erratum.
erudition, n. [learning], [scholarship].