Obsolete means outdated or no longer in use. Modern is its direct antonym, meaning current or up-to-date.

Benevolent means kind and generous. Malicious means evil or harmful, making it the opposite.

Verbose means using more words than necessary. Concise means brief and to the point, which is opposite.

Disparate means fundamentally different or incompatible. Similar is its direct antonym.

Augment means to make greater in size or extent. Reduce means to make smaller, which is opposite.

Meticulous means very careful and precise about details. Careless is its antonym.

Robust means strong and healthy. Weak is its direct antonym.

Acrimonious means bitter and harsh; harmonious means peaceful and agreeable, making it the direct antonym.

Candid means frank and open; evasive means avoiding direct answers, making it the opposite.

Ephemeral means short-lived; permanent means lasting indefinitely, providing the direct contrast.