“Stubborn” refers to someone who is unwilling to change their attitude or position despite reason or persuasion.

“Recalcitrant” is a synonym that similarly describes someone who resists authority, guidance, or instruction. Both words describe individuals who are unyielding or difficult to manage.

Similar Words: Obdurate, Intractable, Obstinate, Recalcitrant, Implacable.

“Prognosis” refers to the likely course or outcome of a disease or condition, often based on medical knowledge.

“Forecast” is a synonym, as it refers to predicting the future course of events, especially based on analysis or observation, which is similar to predicting the progression of an ailment.

Similar Words: Forecast, Warning, Omen, Presage, Prediction, Prophecy.

“Connoisseur” refers to an expert or discerning individual who appreciates fine art, wine, food, or similar areas of taste. The most fitting synonym is “Lover of art”, as it describes someone who has a deep appreciation and expertise in artistic works, often seen in connoisseurs.

Similar Words: Coryphaeus, Savant, Aesthete, Gourmet, Epicure.

“Effrontery” means shameless boldness or audacity, particularly in defying accepted norms or showing disrespect.

“Insolence” is a similar term, meaning rude or disrespectful behavior, often with an attitude of impudent disregard for others. Both words describe a form of disrespectful boldness.

Similar Words: Impertinence, Brazenness, Gall, Brass, Impudence.

“Mendicant” refers to someone who begs for money or food as a way of life, typically living in poverty.

“Cadger” is a synonym, meaning a person who scrounges or begs for things, particularly money or help. Both terms describe individuals who rely on others for support through begging.

Similar Words: Cadger, Pauper, Beggar, Panhandler.

“Insatiable” describes a desire or appetite that cannot be satisfied, often in the context of greed or hunger.

“Rapacious” means aggressively greedy or predatory, similarly reflecting an unquenchable desire for more, making it a fitting synonym for insatiable.

Similar Words: Greedy, Rapacious, Gluttonous, Quenchless, Craving.

“Impeccable” means flawless or without any faults. “Immaculate” is synonymous, meaning perfectly clean or free from any imperfection.

Both words emphasize a high standard of perfection or purity, making them interchangeable in contexts where something is faultless.

Similar Words: Unblemished, Flawless, Irreproachable, Immaculate, Pure.

“Bellicose” describes someone who is inclined to fight or display aggression.

“Belligerent” is a direct synonym, referring to someone who is hostile or combative. Both words convey a sense of readiness to engage in conflict or hostility.

Similar Words: Pugnacious, Bellicose, Aggressive, Combative, Hostile, Rivalry.

“Infrequent” refers to something that does not occur often, essentially rare or unusual.

“Rare” is the perfect synonym, as it also means something that happens infrequently or is uncommon. Both words highlight the idea of rarity or occurrence at irregular intervals.

Similar Words: Scarce, Rare, Casual, Irregular, Exceptional, Intermittent.

“Futile” describes something that is incapable of producing any useful result; it's essentially ineffective or pointless.

“Abortive” means something that is unsuccessful or incomplete, thus incapable of achieving its goal, making it synonymous with futile in terms of lack of success or purpose.

Similar Words: Abortive, Pointless, Useless, Vain.