(often used in combination) having or using or propelled by means of power or power of a specified kind; "powered flight"; "kerosine-powered jet engines"
sufficiently significant to affect the whole world; "earthshaking proposals"; "the contest was no world-shaking affair"; "the conversation...could hardly be called world-shattering"
using (or as if using) mechanisms or tools or devices; "a mechanical process"; "his smile was very mechanical"; "a mechanical toy"
relating to or governed by or in accordance with mechanics; "a belief that the universe is a mechanical contrivance"; "the mechanical pressure of a strong wind"
relating to or concerned with machinery or tools; "mechanical arts"; "mechanical design"; "mechanical skills"
existing in fact; not theoretical; real; "a decline in the effective demand"; "confused increased equipment and expenditure with the quantity of effective work done"
able to accomplish a purpose; functioning effectively; "people who will do nothing unless they get something out of it for themselves are often highly effective persons..."-G.B.Shaw; "effective personnel"; "an efficient secretary"; "the efficient cause of the revolution"
exerting force or influence; "the law is effective immediately"; "a warranty good for two years"; "the law is already in effect (or in force)"
producing or capable of producing an intended result or having a striking effect; "an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation"-LewisMumford; "effective teaching methods"; "effective steps toward peace"; "made an effective entrance"; "his complaint proved to be effectual in bringing action"; "an efficacious law"
works well as a means or remedy; "an effective reprimand"; "a lotion that is effective in cases of prickly heat"
ready for service; "the fort was held by about 100 effective soldiers"
possessing or exerting or displaying energy; "an energetic fund raiser for the college"; "an energetic group of hikers"; "it caused an energetic chemical reaction"
large or relatively large in number or amount or extent or degree; "a considerable quantity"; "the economy was a considerable issue in the campaign"; "went to considerable trouble for us"; "spent a considerable amount of time on the problem"
of great significance or value; "important people"; "the important questions of the day"
having or suggesting a consciousness of high position; "recited the decree with an important air"; "took long important strides in the direction of his office"
having great power or force or potency or effect; "the most powerful government in western Europe"; "his powerful arms"; "a powerful bomb"; "the horse's powerful kick"; "powerful drugs"; "a powerful argument"
characterized by or full of force or strength (often but not necessarily physical); "a forceful speaker"; "a forceful personality"; "forceful measures"; "a forceful plan for peace"
important in effect or meaning; "a significant change in tax laws"; "a significant change in the Constitution"; "a significant contribution"; "significant details"; "statistically significant"
too closely correlated to be attributed to chance and therefore indicating a systematic relation; "the interaction effect is significant at the .01 level"; "no significant difference was found"