Spelling list: Silent p words

In these words the letter p is silent. Look for the pn, ps and pt letter patterns. Caution - these must be the hardest words in the Spellzone course - only for the brave to attempt!

pneumatic	The workman had a pneumatic drill. *
pneumonia	Pneumonia can be a very serious illness. *
psychic	The old lady had psychic powers. *
psychiatry	Psychiatry is the study and treatment of mental illness.
psychiatrist	The psychiatrist worked at the hospital. *
psychedelic	Psychedelic drugs can be dangerous as they alter the mind.
psychology	My brother is studying psychology at college. *
psychologist	A psychologist studies the way the mind works.
psychopath	The killer was found to be a psychopath.
psychosis	Psychosis is a serious mental illness.
psychotherapy	Her eating phobias were cured by psychotherapy.
pterodactyl	The pterodactyl is now extinct.
pterosaur	The pterosaur is now extinct.
ptarmigan	The ptarmigan is a brown bird living in the colder parts of Europe.