Spellings

Pneumonia is the correct spelling for the lung infection. Like many words of Greek origin involving air or lungs, it begins with a silent 'p'. The other options are phonetic misspellings.

Silhouette is the correct spelling. It is a French loanword named after Étienne de Silhouette. It requires the 'h' after 's' and the double 'l' and 'tte' ending.

Extempore is the correct spelling for something spoken or done without preparation. It is a Latin phrase meaning 'out of the time'. Other options are phonetic misspellings.

Peripheral is the correct spelling, referring to the outer limits or edge of something. It is derived from 'periphery'. Other options misplace the 'h' or the 'i'.

Chlorophyll is the correct spelling for the green pigment in plants. It contains 'chloro-' (green) and '-phyll' (leaf). It requires a double 'l' at the end; 'chlorophyl' is a less common variant, but 'chlorophyll' is standard.

Pneumatics, the branch of engineering that makes use of gas or pressurized air, begins with a silent 'p'. The ending is '-ics'. Options using 'k' or 'x' are phonetic misspellings.

Anthropologist is the correct spelling. It comes from the Greek 'anthropos' (human) and 'logia' (study). Common errors include adding a 'w' or using 'ph' instead of 'p' in the middle of the word.

'Physiotherapy' is the correct spelling for physical therapy treatment. 'Phyceotherapy', 'Psyciotherapy', and 'Physeotherapy' have incorrect letter combinations.

Gargantuan, meaning enormous, is spelled with 'ua' in the final syllable. It is derived from Gargantua, the giant in Rabelais's novels. Other options omit the 'u' or add an extra 'u' in the second syllable.

Phoenix is the correct spelling for the mythical bird that rises from its own ashes. The 'o' comes before the 'e'. Other options are common misspellings that swap these vowels or use 'cs' instead of 'x'.

Prosperity is the correct spelling, derived from the Latin 'prosperitas'. The other options are incorrect phonetic variations that misplace vowels like 'a' or 'e' in the middle or end of the word.

"Flabbergast" is the correct spelling, meaning to surprise greatly. It requires a double 'b'. Distractors use a single 'b' or change the 'e' to an 'a', which are incorrect.

"Insomnia" is the correct spelling. It is a straightforward transcription of the Latin word for sleeplessness. Distractors add unnecessary vowels like 'i' or 'e' within or at the end of the word.

"Questionnaire" is the correct spelling. It is characterized by a double 'n' and the "-aire" suffix. Distractors typically miss the second 'n' or the final 'e'.

The adverb form of 'immediate' drops the final 'e' and adds '-ly'. The correct spelling is 'immediately' with double 'm' and double 'l' after dropping the 'e'. Options A, B, and C all have incorrect letter patterns or drop essential letters.