テンション

てんしょん
noun
mood, energy level
1. mood, spirits, energy level
One's level of excitement, enthusiasm, or emotional energy. High tension means being upbeat and energetic; low tension means being down or unmotivated. This is a wasei-eigo usage distinct from the English meaning.
テンションが()がる。
To get excited / One's spirits rise.
今日(きょう)はテンション(ひく)いね。
You seem down today.
テンション(たか)めで()こう!
Let's go with high energy!
ハイテンションな(ひと)一緒(いっしょ)にいると(つか)れる。
Being with a hyper person is tiring.
2. tension (English meaning)
Physical tension, tightness, or stress (the original English meaning). Less common in everyday Japanese than sense 1.

ETYMOLOGY: From English "tension," but used with a different meaning in Japanese (和製英語(わせいえいご)). In Japanese, it primarily refers to one's mood or energy level, not stress or tightness.

CAUTION FOR LEARNERS: In English, "high tension" suggests stress or anxiety, but in Japanese ハイテンション means "excited" or "energetic." This is a common source of misunderstanding.

COMMON EXPRESSIONS:

  • テンションが()がる (to get excited, spirits rise)
  • テンションが()がる (to feel down, spirits fall)
  • テンションが(たか)い (to be in high spirits, energetic)
  • テンションが(ひく)い (to be in low spirits, unmotivated)
  • ハイテンション (high energy, hyper)
  • ローテンション (low energy, subdued)
  • テンション(たか)め (somewhat high energy)

REGISTER: Casual, colloquial. Very common in everyday conversation, especially among younger speakers.