OB- prep.
, toward, before, against, reversely, etc.; also, as a simple intensive; as in oblige, to bind to; obstacle, something standing before; object, lit., to throw against; obovate, reversely, ovate. Ob- is commonly assimilated before c, f, g, and p, to oc-, of-, og-, and op-.
OBLIGE v.
To bind by some favor rendered; to place under a debt; hence, to do a favor to; to please; to gratify; to accommodate. Thus man, by his own strength, to heaven would soar, And would not be obliged to God for more. Dryden. The gates before it are brass, and the whole much obliged to Pope Urban VIII. Evelyn. I shall be m…