Verb

(frustrat)

To disappoint or defeat; to vex by depriving of something expected or desired.

It frustrates me to do all this work and then lose it all.

To hinder or thwart.

My clumsy fingers frustrate my typing efforts.

To cause stress or panic

This test frustrates me because if I fail, it'll destroy my grade.

Verb

(en verb)

To stop; to keep (from happening).

I brushed my teeth to prevent them from going yellow.

* {{quote-news

, year=2011 , date=October 1 , author=Tom Fordyce , title=Rugby World Cup 2011: England 16-12 Scotland , work=BBC Sport citation , page= , passage=Scotland must now hope Georgia produce a huge upset and beat Argentina by at least eight points in Sunday's final Pool B match to prevent them failing to make the last eight for the first time in World Cup history.}}

* 1897 , Henry James, What Maisie Knew :

‘I think you must be mad, and she shall not have a glimpse of it while I'm here to prevent !’

(obsolete) To come before; to precede.

* Bible, 1 Thess. iv. 15

We which are alive and remain unto the coming of the Lord shall not prevent them which are asleep.

* Book of Common Prayer

We pray thee that thy grace may always prevent and follow us.

* Prior

Then had I come, preventing Sheba's queen.

(obsolete) To outdo, surpass.

* 1596 , Edmund Spenser, The Faerie Queene , IV.i:

With that he put his spurres vnto his steed, / With speare in rest, and toward him did fare, / Like shaft out of a bow preuenting speed.

(obsolete) To be beforehand with; to anticipate.

* Alexander Pope

their ready guilt preventing thy commands