Antonym: extravagant, luxurious, uneconomical. Similar words: economically, economic, economics, economic recovery, economist, economy, chemical, ecological. Meaning: [‚'ekə'nɑmɪkl /-nɒm-] 
adj. 1. using the minimum of time or resources necessary for effectiveness 2. of or relating to an economy, the system of production and management of material wealth 3. avoiding waste.
adj. 1. using the minimum of time or resources necessary for effectiveness 2. of or relating to an economy, the system of production and management of material wealth 3. avoiding waste. 
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1, It is more economical to wash a full load.
2, Solid fuel would be more economical.
3, My new car is economical of fuel.
4, The car is economical to run.
5, He is economical of his time.
6, She is economical with/in her use of salt when cooking.
7, Coke is an economical fuel but it leaves a lot of ash.
8, Going by train is more economical than going by plane.
9, It would be more economical to buy the bigger size.
10, She is an economical housekeeper and feeds her family cheaply.
11, A small car is more economical to run.
12, A monthly is more economical than 4 weeklies.
13, His gestures were economical,(http://sentencedict.com/economical.html) his words generally mild.
14, This arrangement is more economical with space.
15, It is economical to run and ecologically sound.
16, He was economical in all areas of his life.
17, What's the most economical way of heating this building?
18, This new oven is highly economical.
19, It is usually economical to buy washing powder in large quantities.
20, The lorry is very economical on fuel and yet has a good turn of speed when required.
21, This arrangement is more economical in its use of staff.
22, Sometimes expensive drugs or other treatments can be economical in the long run.
23, Mexican cookery is economical, she says. Nothing goes to waste.
24, Buying in bulk is more economical than shopping for small quantities.
25, Bicycles are regarded as an economical alternative to buses whose fares have increased 5 times in the past 3 years.
26, He was economical with the truth - in other words, he was lying.
27, The state has paced the whole nation in the economical reform.
28, The government should take effective measures to live through this economical crisis.
29, We have discovered that the young man is a discreet and economical fellow.
30, When we had done the costings on the project, it was clear it would not be economical to go ahead with it.
More similar words: economically, economic, economics, economic recovery, economist, economy, chemical, ecological, atomic, agronomy, autonomy, nominee, nominate, nominally, astronomer, nomination, amicable, second, logical, typical, radical, musical, medical, ethical, whimsical, basically, typically, vertical, tropical, clinical.