of, ob,oc & op
These ROOT-WORDS are the Prefixes OB,OC,OF & OP which mean AGAINST & FACING. You will notice that the OB can change to OF, to OC, or even to OP. You guessed it - assimilation. OF before words with f, OC before words with c and OP before words with p. The words with OB are very interesting. In practically every one of them, the thought is opposed to the action.
1. Obese : OB ese (o bese’) adj.
Excessively fat
2. Obituary : OB ituary (o bick’ u are e) n.
A death notice
3. Object : OB ject (ob jekt’) v.
Oppose; refuse
4. Oppressive : OP pressive (o pres’ ive) adj.
Harsh pressures
5. Offend : OF fend (o fend’) v.
To strike against moral law; to cause pain
6. Objurgate : OB jurgate (ob’ jur gate) v.
To denounce harshly
7. Obligee : OB ligee (ob li jee’) n.
The one who must carryout the duty
8. Obligate : OB ligate (ob’ li gate) v.
To bind by duty; constrain
9. Obligatory : OB ligatory (o blig’ a tore ee) adj.
Binding; required
10. Oblige : OB lige (o blije’) v.
To bind by a favor or service; force
11. Oblique : OB lique (o bleke’) adj.
Not straight; having a slanting position
12. Obliquity : OB liquity (o blik’ wit ee) n.
Deviation from moral rectitude
13. Obliterate : OB literate (o blit’ e rate) v.
Blot out
14. Oblivious : OB livious (o bliv’ ee us) adj.
Unaware; forgetful
15. Obloquy : OB loquy (ob’ lo kwee) n.
Condemnatory speech
16. Obscene : OB scene (ob sene’) adj.
Against decency; disgusting to the senses, tasteless
17. Oppose : OP pose (o poze’) v.
Place oneself against; stand up against
18. Occlusion : OC clusion (o klu’ zhun) n.
State of being shut out of; as, of a passage
19. Occult : OC cult (o kult’) adj.
Kept hidden; dealing with mysterious knowledge
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