We need an adjective to describe everyday greetings. The context mentions doing things out of habit without real thought or effort. By combining a variation of the Latin root fungi/funct- (to perform) with the prefix per- and suffix -ory, we get perfunctory, which means carried out with a minimum of effort or out of habit.

Following the modifier so, we need an adjective to describe a personality trait or behavior. Someone who is vocal and frank in stating their opinions is outspoken (formed by compounding the verb speak and the preposition out).

The modal perfect structure must have + [past participle] requires a past participle form. The context refers to senior figures quietly accepting or agreeing to a cover-up. Originating from the Latin quiescere (to rest/be quiet), the verb acquiesced means to accept something without arguing, even if you do not really agree with it.

The passive structure requires a past participle. To turn the adjective bitter into a verb meaning to make bitter, we add the prefix em- and the past participle suffix -ed.

We need an adjective to describe the state of the frostbitten person lying in the tent. Because he is unable even to speak, he lacks physical sensation or consciousness. The negative prefix in- and adjective suffix -ate combine with the root sense to create insensate, meaning not aware of what you are doing or what is happening around you.

We need an adjective to modify the noun system. The context describes a method of growing plants faster than in traditional soil. The combining form hydro- (water) and ponics (labor/working) gives us the adjective hydroponic, which means relating to or grown using a method of growing plants in water, sand, or gravel to which liquid chemical plant foods are added.

Following the definite article the, we need a noun. In business and government contexts, a go-ahead means official permission or a signal to proceed with a project.

The linking verb left followed by an object (the athlete) requires an adjective/past participle to describe the athlete’s state. We apply the negative prefix in-, the verbal suffix -itate and the past participle suffix -ed to get incapacitated (unable to work or do things normally).

Following the infinitive marker to, we need a base verb. The tabloid paper tried to damage the actress’s fame or reputation with malicious rumors. The prefix de- added to the root gives us defame (to damage the good reputation of someone).

The relative clause who will be [verb-ing] requires a present participle to describe an ongoing action in the future. The verb form of official is officiate (to act as an official in a game).

The structure a lack of AI [noun] requires a noun. We turn the verb prepare into the past participle adjective prepared, and then add the nominal suffix -ness to form the abstract noun preparedness, which means the state of being ready.

We need an adjective to modify the noun evidence. Since the evidence successfully proved the client was innocent, it means the evidence cannot be denied or disproven. We combine the negative prefix ir- and the suffix -able with the root to form irrefutable.

Following the linking verb remained and the adverb entirely, we need an adjective. Since he heard shocking news but his face did not show it, we use the negative suffix -less on the noun expression to form expressionless (showing no feeling or thoughts).

Following the definite article the and preceding of wealthy donors, we need a noun. Patronage (using the noun-forming suffix -age) is the support, encouragement, or financial aid given by a patron to an organization.

We need an adjective paired with intelligent to describe Andrew. The clues cries every night and disturbs other boys indicate a lack of emotional stability. Adding the prefix mal- to the participle adjusted creates maladjusted, describing a person, usually a child, who has been raised in a way that does not prepare them well for the demands of life, which often leads to problems with behaviour.

Following the definite article the, we need a noun. Because the text states she practiced reflection to overcome her own deepest insecurities, we add self- to the noun form knowledge to get self-knowledge, which means an understanding of oneself and one’s abilities.