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1. The use of physical or mental energy to do something; exertion.
2. A difficult exertion of strength or will: It was an effort to get up.
3. A usually earnest attempt: Make an effort to arrive promptly.
4. Something done or produced through exertion; an achievement: a play that was his finest effort.
5. Physics
a. Force applied against inertia.
b. The force needed by a machine to accomplish work on a load.

[Middle English, from Old French esfort, from esforcier, to force, exert, from Medieval Latin exfortiāre : Latin ex-, ex- + Latin fortis, strong; see bhergh- in Indo-European roots.]

ef′fort·ful adj.
ef′fort·ful·ly adv.


in an effortful manner
References in periodicals archive ?
Armantrout can depict her own poems as effortfully approximate attempts to show what things are like, and how she is like others, without claiming that she knows how other people really feel, or how things really are:
For most of history, Tilson Thomas's orchestra (he's also Music Director of the San Francisco Symphony) has used as its primary residence the Lincoln Road Theatre, a converted movie house on the busiest stretch of restaurant-and shop-lined pavement in South Beach, with acoustics reaching effortfully toward adequacy.
They are expected to process it more deeply and effortfully than those who were simply assigned a WOMC source.