英语词源字典 - 在线词源网站

bull-headed (adj.)[bull-headed 词源字典]: also bullheaded, "obstinate," 1818, from bull (n.1) + head (n.).[bull-headed etymology, bull-headed origin, 英语词源]
hard-headed (adj.): also hardheaded, 1580s, "stubborn," from hardhead "dull person" (1510s), from hard (adj.) + head (n.). Meaning "practical, shrewd" is attested from 1779. Compare Dutch hardhoofdig "stupid."
levelheaded (adj.): also level-headed, 1869, from level (adj.) + head (n.). The notion is of "balanced." Related: Levelheadedness.
light-headed (adj.): also lightheaded, "dizzy," 1530s; from light (adj.1) + head (n.). Related: Light-headedness.
long-headed (adj.): "discerning," c. 1700, from long (adj.) + head (n.).
many-headed (adj.): 1580s; see many + head (n.).
pigheaded (adj.): also pig-headed; 1756, "having a head resembling a pig;" 1788 as "obstinate;" see pig (n.) + head (n.). Usually, but not always, figurative.
A pig-headed man must be one, who, like a driven pig, always will do exactly the opposite to what other people--in the case of the pig his luckless driver--wish him to do, that is to say he is an obstinate man. ["The Sedberghian," June 1882]