"Blackening" is a word in ENGLISH

arúm - (B) Not easily inflammable, slow burning, difficult to light; to burn badly, smoulder. See álhom. arúm, Dark; tarnished; …

atutung n blackening of the teeth. v [A123P; a4] get blackened teeth. Ug dì ta manipilyu atutungun ta, If you …

To blacken with smut; to foul with soot.

To make black; to blacken; to soil; to sully.

To blacken (leather, shoes, etc.) with blacking.

To make or render black.

To grow black or dark.

To defame; to sully, as reputation; to make infamous; as, vice blackens the character.

To make dark; to darken; to cloud.

of Blacken

One who blackens.

A wash that blackens, as opposed to whitewash; hence, figuratively, calumny.

To blacken; also, to defile.

bulíng - (H) Stain, dirt, smudge; to stain, smudge, soil, dirty, mess, begrime, sully. Nabulingán siá sang bulíng sang kaláhà. …

To blacken; to sully; to stain; to tarnish; to damage; -- esp. used of reputation or character.

Fig.: To blacken or sully; to defame.

To blacken thoroughly; to make very black.

Fig.: A blackening; defamation.

One who, or that which, blackens.

dúbun a very dark in hue; almost black. Gwápa untà siya apan dúbun lang kaáyu sa kaitum, She is pretty, …