ineffective

As an adjective ineffective

is not having the desired effect; ineffectual.

As an interjection voila is

"lo! there it is", ta-da, presto.

As a noun ostentation

is ambitious display; vain show; display intended to excite admiration or applause.

As an adjective ineffective is

not having the desired effect; ineffectual.

Ineffective is a related term of inoperative.

As adjectives the difference between ineffective and inoperative

is that ineffective is not having the desired effect; ineffectual while inoperative is not working or functioning; either idle or broken.

Idle is a related term of ineffective.

As adjectives the difference between idle and ineffective

is that idle is (lb) empty, vacant while ineffective is not having the desired effect; ineffectual.

As a verb idle

is to spend in idleness; to waste; to consume.

Empty is a related term of ineffective.

As adjectives the difference between empty and ineffective

is that empty is devoid of content; containing nothing or nobody; vacant while ineffective is not having the desired effect; ineffectual.

As a verb empty

is (ergative) to make empty; to void; to remove the contents of.

As a noun empty

is a container, especially a bottle, whose contents have been used up, leaving it empty .

Untrained is a related term of ineffective.

As adjectives the difference between untrained and ineffective

is that untrained is lacking training, not having been instructed in something while ineffective is not having the desired effect; ineffectual.

Ineffective is a related term of frivolous.

As adjectives the difference between ineffective and frivolous

is that ineffective is not having the desired effect; ineffectual while frivolous is silly, especially at an inappropriate time or in an inappropriate manner.

As adjectives the difference between ineffective and meaningless

is that ineffective is not having the desired effect; ineffectual while meaningless is lacking meaning.

Ineffective is a related term of trifling.

As adjectives the difference between ineffective and trifling

is that ineffective is not having the desired effect; ineffectual while trifling is trivial, or of little importance.

As a noun trifling is

the act of one who trifles; frivolous behaviour.