词根词缀：in-1

【来源及含义】Latin: no, not [ig-, il-, im-, ir-]

【相关描述】This in-, "not", becomes i- before gn, as with "ignore"; il- before l, as with illiterate; im- before b, m; and p, as with imbalance, immiscible, impecunious; and ir- before r, as with irrefragable.

Don't confuse this Latin prefix, in-¹, meaning "not", with another Latin prefix in-² meaning "in, into, within, inside, on, toward" or with the prefix for English-origin words in-³ meaning "in, into; within".

【同源单词】ignorance, illiterate, imbalance, immaculate, immature, immovable

词根词缀：macul-, maculat-

【来源及含义】Latin: spot, mark, stain, blot, blemish, mesh; the original meaning of macula seems to have been, "a soiled spot, a spot to be cleaned"

【同源单词】Actitis macularia, immaculate, lepra maculosa, macula, macula cerulea, macula retina