efficient
形容词比较级：more efficient
形容词最高级：most efficient
词形变化：
同义词：
effective | effectual | economical | competent | capable | able | active | potent | efficacious | operant | powerful | operative | valid | productive | thrifty | saving | workmanlike | qualified | expeditious | practical | technical | experienced | accomplished | well-organized | resourceful | proficient | professional | inexpensive | timesaving | labour-saving | laborsaving | cost-effective |
反义词：
词义辨析：
同义:
a.有效的
efficacious
effectual
effective
valid
active
operative
operant
potent
powerful
productive
a.有能力的, 能胜任的
competent
qualified
capable
workmanlike
able
a.效率高的
economical
thrifty
saving
同义参见:
experienced
expeditious
practical
accomplished
technical
反义:
a.效率高的; 有能力的
inefficient