1. The act of omitting; neglect or failure to do something required by propriety or duty. The most natural division of all offenses is into those of omission and those of commission. Addison.

2. That which is omitted or is left undone.

OMISSIVE
O*mis"sive, a. Etym: [See Omit.]

Defn: Leaving out; omitting. Bp. Hall.
— O*mis"sive*ly, adv.

OMIT
O*mit", v. t. [imp. & p. p. Omitted; p. pr. & vb. n. Omitting.] Etym:
[L. omittere, omissum; ob (see Ob- + mittere to cause to go, let go,
send. See Mission.]

1. To let go; to leave unmentioned; not to insert or name; to drop. These personal comparisons I omit. Bacon.

2. To pass by; to forbear or fail to perform or to make use of; to leave undone; to neglect. Her father omitted nothing in her education that might make her the most accomplished woman of her age. Addison.

OMITTANCE
O*mit"tance, n.

Defn: The act of omitting, or the state of being omitted; forbearance; neglect. Shak.

OMITTER
O*mit"ter, n.