malconstruction n.

word-forming element of Latin origin meaning "bad, badly, ill, poorly, wrong, wrongly," from French mal (adv.), from Old French mal (adj., adv.) "evil, ill, wrong, wrongly" (9c.), from Latin male (adv.) "badly," or malus (adj.) "bad, evil" (fem. mala, neuter malum), from Proto-Italic *malo-, from PIE *mol-o-, probably from PIE root *mel- (3) "false, bad, wrong."

Most Modern English words with this element are 19c. coinages. It generally implies imperfection or deficiency, but often it is simply negative (as in malfeasance, malcontent). It is equivalent to dys- and caco- of Greek origin and Germanic mis- (1).

late 14c., construccioun, "act of construing; manner of understanding the arrangement of words in translation" (a sense now obsolete), from Latin constructionem (nominative constructio) "a putting or placing together, a building," noun of action from past-participle stem of construere "to pile up together, accumulate; build, make, erect," from assimilated form of com "with, together" (see con-) + struere "to pile up" (from PIE *streu-, extended form of root *stere- "to spread").

The oldest sense in English goes with construe, and led to the meanings "the construing, explaining, or interpreting of a text" (late 15c.) and "explanation of the words of a legal document" which endures in parliamentary language ("What construction do you put on this clause?"); also compare constructionist.

From early 15c. as "act of building or making;" 1707 as "way or form in which a thing is built or made;" 1796 as "that which is constructed, a structure." Related: Constructional; constructionally.