'Plentiful' is a synonym for 'abundant', meaning existing in large quantities.

'Fearless' is a synonym for 'brave', while the other options imply a lack of courage.

'Gloomy' is a synonym for 'dismal', indicating a state of darkness or depression.

'Elated' is a synonym for 'happy' and fits the context.

Joyful is a synonym for happy, indicating a feeling of great pleasure.

'Easy' is an antonym for 'difficult'.

'Lazy' is an antonym for 'diligent', which means showing care and effort.

'Contract' is the antonym of 'expand', as it means to decrease in size or amount.

Malevolent means having or showing a wish to do evil to others, which is the opposite of benevolent.

'Contract' means to decrease in size, which is the opposite of 'expand'.

'Selfish' is the opposite of 'generous', which means unwilling to share or give.

'Deceitful' is the opposite of 'sincere', which means being honest and genuine.

The antonym of 'abundant' is 'scarce', meaning limited or insufficient.

'Lazy' is the opposite of 'diligent', which means showing care in one's work.

'Lucid' means clear and easy to understand, which fits the context of the sentence.

'Joyful' is a synonym of 'happy', conveying a similar meaning.

'Artificial' refers to something made or produced by human beings rather than occurring naturally, while 'natural' refers to something that exists in nature.

'Rare' indicates something that does not happen often, contrasting with 'frequent'.

Selfish is the antonym of generous, as it describes someone who does not share or give.

'Pessimistic' is the opposite of 'optimistic', indicating a tendency to see the worst aspect of things.

'Victorious' means having won a victory, while 'defeated' means having lost.

'Plentiful' is a synonym for 'abundant', indicating a large quantity.

'Elated' is a synonym for 'happy' and fits the context of the sentence.

'Joyful' is a synonym of 'happy'.

'Theist' is the one-word substitute for someone who believes in God.

A 'melomaniac' is someone who has an excessive enthusiasm for music.

An artisan is a skilled craftsperson, particularly in handmade goods.

An 'expert' is a master in a particular field.

An 'entomologist' is a specialist in the study of insects.

A specialist is someone who has a deep understanding of a specific area.