acidulous

adj rather sharp or bitter in taste or manner （味）酸的; （态度）尖酸刻薄的.

acetylene, ache, achievable, achieve, achieve one's goals, achievement, achiever, Achilles, Achilles' tendon, aching, achromatic, achy, acid, acid rain, acidic, acidify, acidity, acidly, acidosis, acidulated, acknowledge, acknowledged, acknowledgement, acknowledgement (also acknowledgment), acknowledging, acknowledgment, acme, acne, acolyte, aconite, acorn, acoustic, acoustically, acoustics, acquaint, acquaintance, acquaintant, acquainted, acquaintence, acquiesce,