One who is interested in the collection and study of postage stamps
Mid 19th century: from French philatélie, from philo- ‘loving’ + Greek ateleia ‘exemption from payment’ (from a- ‘not’ + telos ‘toll, tax’), used to mean a franking mark or postage stamp exempting the recipient from payment.
“You should show him the collection, he’s a hobby philatelist.”
A person who inspires or influences others, especially one prominent in a particular sphere.
Late Middle English: from Old French luminarie or late Latin luminarium, from Latin lumen, lumin- ‘light’. Modern meaning comes from the more archaic meaning ‘a natural body that gives light, such as the sun or the moon.’
(archaic) a momentary sick of faint feeling. Modern usage is an uneasy feeling of doubt about one’s actions, usually used in the negative ‘no qualms’.
Early 16th century (in the sense ‘momentary sick feeling’): perhaps related to Old English cw(e)alm ‘pain’, of Germanic origin.