Charisma
Synonym - ability
antonym
Definition adj.
the special virtue of an office, function, position, etc., that confers or is thought to confer on the person holding it an unusual ability for leadership, worthiness of veneration, or the like.

Elvis's moves seem to posses a weapons-grade charisma.

Efficient and Flexible Reading p. 247

Many soccer players like David Beckham have a lot or charisma.

http://dictionary.reference.com/browse/charisma

painstaking
Synonym - careful
Antonym
Definition- noun
taking or characterized by taking pains or trouble; expending or showing diligent care and effort; careful: a painstaking craftsman; painstaking research.

The task of deciding which words actually make into dictionaries, their editors say is much painstaking.

Efficient and Flexible Reading p. 248

It's painstaking using terms we don't know during a speech.

http://dictionary.reference.com/browse/painstaking


inconsequential

Synonym - unimportant
Antonym important
Definition adj
of little or no importance; insignificant; trivial.

Back in 1999, he thought he had a perfect candidate to drop from the 2000 edition- a seemengly inconsequential word not in general use.

Efficient and Flexibe Reading p. 248

Although my sister crashed, the damages were inconsequential.

http://dictionary.reference.com/browse/inconsequential