Translation Japanese English: 急性的

1 Spartan, acute, austere, cutting, dangerous, dour, edged, forbidding, grave, grievous, grim, hard, harsh, heavy-handed, inexorable, intemperate, knockout, life-threatening, relentless, rigorous, rough, roughshod, serious, severe, stern, stinging, stringent, terrible, tight, unappeasable, unforgiving, unrelenting, unsparing, unyielding, wicked.

2 acuate, acute, alert, alive, apprehensive, awake, bantering, cutting, discerning, discriminating, facetious, high, high-pitched, incisive, inquisitory, intense, keen, knifelike, lancinate, lancinating, needlelike, penetrating, penetrative, piercing, probing, searching, sharp, shrill, stabbing, tongue-in-cheek.