hardheaded
1. Inflexible; stubborn; overly willful or obstinate. Also written as "hard-headed." Our son is so hardheaded. Once he's made up his mind about something, there's no way anyone can change it! We've got a hard-headed new boss in the office who thinks her way of doing things is the only correct one.
2. Very practical and shrewd; not concerned with or influenced by emotions. Also written as "hard-headed." We've hired a consultant to give us a hardheaded analysis of the company's future.
head south
1. To escape; to vanish or disappear. (Not necessarily in a southerly direction.) Everyone in the gang headed south when they learned that the police had discovered their hideout.
2. To fall or drop; to depreciate; to lose quality or value. (Especially related to finances or stock exchanges.) The company's stock profile continued heading south for the third day in a row today. I used to be a big player in the stock market, but all my investments have headed south lately.
3. To cease working or functioning; to quit, fail, or fall apart. Talks between the labor union and the construction firm headed south yesterday, so it looks like workers will be on strike again soon. My computer is only a month old, and it's already heading south.
hammer-headed
Stupid. He's so hammer-headed he probably just walked by the entrance to the train station and didn't even see the huge sign out front.
level-headed
Calm and practical, especially in times of stress. Whenever I have a problem with the copier, I call Elaine because she's so level-headed and can always think of a quick solution. You really need to be level-headed if you're going to work in an emergency room.
head for a fall
To take actions that will likely result in a problem or conflict, typically due to one's past behavior. With the way he keeps skipping school, he is definitely headed for a fall. Oh, Jennifer is heading for a fall—you can't start rumors about half the school without repercussions.
be light-headed
To feel dizzy, as if one might faint. I'm light-headed because I stood up too quickly. Your mother needs to sit down, she's light-headed all of a sudden.
feel light-headed
To feel dizzy, as if one might faint. I'm feeling light-headed because I stood up too quickly. Your mother needs to sit down because she feels light-headed all of a sudden.
bull-headed
someone who is bull-headed is determined to do exactly what they want to do, and does not think about what other people want He's completely bull-headed. I asked him not to throw out that old table, but he did it anyway.
be heading/riding for a fall
also be headed for a fall to be behaving in a way that is likely to cause problems for you Greg's riding for a fall - he gets to work late and spends hours talking to his friends on the phone.
be/feel light-headed
to feel weak and as if you might fall over I feel a bit light-headed. I shouldn't have drunk that second glass of wine.