How to say "head-on" in Japanese

• 真っ向からまっこうから
  expressionDescribes action taken squarely from the front: going at someone or something head-on, face to face. What it foregrounds is the frontal direction of the action rather than the kind of encounter.
  首相しゅしょうが政敵せいてきの挑戦ちょうせんと真っ向まっこうから対決たいけつしました。↗

  The prime minister directly confronted the challenges of his political opponents.
• まともに
  adverbCovers head-on as something arriving or landing squarely — straight in the face — or as being right in front. It stresses directness of contact or position; usually written in kana.
  太陽たいようがまともに照り付てりつけている。↗

  The sun is shining in my face.

Both, though less common, translate head-on, overlapping heavily: 「真っ向から」 stresses going at something squarely from the front, while 「まともに」 stresses a direct hit or being right in front — a difference of emphasis, not exclusive territory.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 真っ向からまっこうからhead-on
• まともにright (in front)
• 正面からしょうめんから(confronting a problem, etc.) head-on
• 頭からあたまからhead-on