on

I

(New American Roget's College Thesaurus)

adv. forward, onward, ahead. See progression. — prep. upon, at; near; informal, at one's expense. See relation, location, contact, height, covering.

II

(Roget's IV) modif. and prep.

1. [Upon]

Syn. above, in contact with, touching, supported by, situated upon, resting upon, on top of, about, held by, moving across, moving over, covering; see also upon 1 .

Ant. under*, underneath, below.

2. [Against]

Syn. in contact with, close to, leaning on; see against 2 , next 2 .

3. [Toward]

Syn. proceeding, at, moving; see approaching , toward .

4. [Forward]

Syn. onward, ahead, advancing; see forward 1 .

5. [Near]

Syn. beside, close to, adjacent to; see bordering , near 1 .

• and so on,

Syn. and so forth, also, in addition; see et cetera .

• have something on someone*,

Syn. know something, have proof, be able to discredit; see expose 1 .

prep.

Syn. at about, approximately, in the vicinity of; see at 1 .

prep.

Syn. at about the time of, prior to, in anticipation of; see before .

III

(Roget's 3 Superthesaurus) prep.

because of, since, for the sake of, by virtue of.

IV

(Roget's 3 Superthesaurus)

I

prep.

1. upon above, touching, in contact with, atop, covering, attached to.

2. near by, around, beside.

ANT.: 1. off, away from, detached from. 2. away from, distant from

II

adv.

1. onward forward, ahead.

2. operating running, going, engaged, working, functioning, powered.

ANT.: 1. stop, backward, behind. 2. off, stopped, unpowered