"Frequency" refers to how often something occurs within a given time period. The opposite would be "rarity," meaning something that occurs infrequently or is uncommon.

Opposite words:  Occasional, Rarity, Sparsity, Scarcity, Unwonted.

"Cadge" means to try to get something (often money or food) from someone else without paying for it, or to beg. The opposite would be "earn," which means to obtain something through effort, work, or merit.

Opposite Words: Acquire, Earn, Obtain, Procure.

"Outlandish" refers to something that is strange, bizarre, or unfamiliar. The opposite would be "banal," which means something that is ordinary, dull, and lacking in originality.

Opposite words: Austere, Banal, Ordinary, Prosaic, Customary, Normal. 

"Exodus" refers to a mass departure or exit of people from a place. The opposite of this would be "return," which means going back to a place from which one has left.

Opposite words: Influx, Inflow, Spate, Return.

"Gratuitous" means something that is given or done without charge or reason, often in an unnecessary or unwarranted way. The opposite would be "warranted," meaning justified, needed, or appropriate.

Opposite words: Costly, Expensive, Paid, Warranted.  

"Provident" refers to being careful with money or resources, often planning for the future. The opposite would be "prodigal," which describes someone who is wasteful or extravagant, especially with money or resources.

Opposite words: Profuse, Extravagant, Wanton, Prodigal, Lavish.

"Enormous" refers to something extremely large in size or extent. The opposite would be "minuscule," which means very small or tiny in size.

Opposite words: Infinitesimal, Miniature, Puny, Pygmy, Teeny.  

"Banal" means lacking originality or freshness, and often describes something that is dull or predictable. The opposite would be "arresting," which refers to something that is striking, interesting, or attention-grabbing.

Opposite words: Arresting, Exciting, Invigorating, Piquant, Poignant, Thrilling, 

"Diatribe" refers to a bitter, forceful verbal attack or criticism. The opposite of this would be "eulogy," which is a speech or piece of writing that praises someone or something, typically after their death, in a positive and respectful manner.

Opposite Words: Acclaim, Accolade, Encomium, Eulogy, Panegyric, Homage, Rhapsody.

"Mannered" refers to someone who behaves in a specific, often artificial or affected way. The opposite would be "natural," meaning spontaneous, unpretentious, and unaffected in behavior.

Opposite words: Natural, Subdued, Quiet, Unpretentious.