- Paula’s Christmas photographs evoked both the magic and the crassness of the holiday.
 
The act of evoking is called evocation (e voh KAY shun).
- A visit to the house in which one grew up often leads to the evocation of old memories.
 
Something that evokes something else is said to be evocative (i VAHK uh tiv).
- The   old novel   is  highly  evocative   of  its era;    reading it  makes   you feel    as  though  you have
been transported a hundred years into the past. 
IMPEDE (im PEED) v to obstruct or interfere with; to delay
- The   faster  I   try to  pick    up  the house,  the more    the cat impedes me; he  sees    me  scurrying
around and, thinking I want to play, he runs up and winds himself around my ankles. - The fact that the little boy is missing all his front teeth impedes his ability to speak clearly.
 
Something that impedes is an impediment (im PED uh munt).
- Irene’s   inability   to  learn   foreign languages   was a   definite    impediment  to  her mastery of
French literature. 
INVOKE (in VOHK) v to entreat or pray for; to call on as in prayer; to declare to be in effect
- Oops! I   just    spilled cake    mix all over    my  mother’s    new kitchen carpet. I’d better  go  invoke
her forgiveness. - This drought has lasted for so long that I’m just about ready to invoke the rain gods.
 - The   legislature passed  a   law restricting the size    of  the state’s deficit,    but it  then    neglected   to
invoke it when the deficit soared above the limit. 
The noun is invocation (in vuh KAY shun).
IRREVOCABLE (i REV uh kuh bul) adj irreversible
To revoke (ri VOHK) is to take back. Something irrevocable cannot be taken back.
- My    decision    not to  wear    a   Tarzan  costume and ride    on  a   float   in  the Macy’s  Thanksgiving
Day Parade is irrevocable; there is absolutely nothing you could do or say to make me
change my mind. - After his friend  pointed out that    the tattoo  was spelled incorrectly,    Tom realized    that    his
decision to get a tattoo was irrevocable. 
MALAISE (ma LAYZ) n a feeling of depression, uneasiness, or queasiness
- Malaise descended on the calculus class when the teacher announced a quiz.
 
MALFEASANCE (mal FEE zuns) n an illegal act, especially by a public official
- President Ford    officially  pardoned    former  President   Nixon   before  the latter  could   be
convicted of any malfeasance.