頭が痛い
headache; worried sick, racking one's brain
→ I am terribly worried and having a headache regarding my child's future path.
頭が固い
stubborn, inflexible, obstinate, thick-headed
→ My boss is so thick-headed and rigid that he refuses to embrace new approaches.
頭にくる
to lose one's temper, to get furious, to see red
→ Having promises broken over and over again, I completely lost my temper and saw red.
頭が下がる
to take one's hat off to, to admire greatly
→ I take my hat off in immense admiration to him for continuing his volunteer work daily.
顔が広い
well-connected, having a wide circle of acquaintances
→ Because she is so well-connected, she is a dependable lifesaver when trouble strikes.
顔を出す
to make an appearance, to drop by, to show one's face
→ I intend to show my face and make an appearance at the alumni reunion.
目がない
having a weakness for, excessively fond of, blind lover of
→ My younger sister has an absolute weakness for luxury brand goods.
目が離せない
cannot take one's eyes off, demanding constant vigilance
→ You cannot take your eyes off a little baby even for a split second.
目が回る
to feel dizzy, to be dizzyingly busy, spun around
→ With mountains of tasks at year-end, we are dizzyingly busy to the point of spinning.
目に浮かぶ
to picture, to rise before one's eyes, to visualize vividly
→ Joyous memories from my childhood vividly rise and float before my eyes.
目にする
to catch sight of, to see with one's own eyes, to witness
→ Lately, the frequency with which I catch sight of foreign tourists has greatly increased.
目に付く
to catch the eye, to be noticeable, to stand out conspicuous
→ Lately, her chronic tardiness has become overwhelmingly noticeable.
目を疑う
cannot believe one's eyes, to rub one's eyes in disbelief
→ Reuniting after ten years, I could not believe my own eyes at how drastically my friend had changed.
目を向ける
to turn one's eyes to, to direct attention toward
→ We ought to turn our eyes and direct far more attention toward environmental issues.
目を通す
to scan, to look over, to glance through, to skim
→ Every morning, I make it a disciplined habit to glance through the daily newspaper.
耳が痛い
painful to one's ears, hitting home, bitter truth
→ The teacher's critique is completely accurate, yet it is bitterly painful to my ears.
耳が遠い
hard of hearing, poor hearing
→ My grandmother is hard of hearing, so I speak to her in a raised, loud voice.
耳にする
to hear, to catch wind of, to learn of
→ I happened to hear the disturbing talk that that shop is closing down permanently.
耳を傾ける
to lend an ear, to listen attentively, to heed
→ One ought to listen attentively to the counterparty's opinions as well.
耳を疑う
cannot believe one's ears, shocked by what one heard
→ Hearing that I had actually passed, I could not believe my own ears.
口がうまい
smooth-tongued, sweet-talking, silver-tongued
→ Let us be vigilant not to be taken in by smooth-tongued, sweet-talking people.
口が堅い
tight-lipped, secretive, good at keeping secrets
→ I can only disclose this secret matter to someone who is strictly tight-lipped.
口が軽い
loose-lipped, blabbermouth, cannot keep a secret
→ Because he is a notorious blabbermouth, you had better not tell him any secrets.
口が重い
slow to speak, reticent, uncommunicative
→ She is usually reticent, but when it turns to work matters, she talks passionately.
口が滑る
to make a slip of the tongue, to blurt out
→ I made a careless slip of the tongue and blurted out about the surprise party.
口が悪い
foul-mouthed, sharp-tongued, caustic, vitriolic
→ He is sharp-tongued and foul-mouthed, but deep down he is a gentle person.
口にする
to speak of, to mention; to taste, to eat
→ He has never once given voice to or spoken of his dissatisfaction.
口に合う
to suit one's taste, to be to one's liking
→ Did this cuisine suit your delicate palate, dear guest?
口を出す
to meddle, to butt in, to poke one's nose in
→ One should refrain from meddling or butting into other people's affairs.