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throw out a feeler

verb

Roget 463: experiment; essay etc. (endeavor) 675; try, try out, assay; make an experiment, make a trial of; give a trial to; put on trial, subject to trial; ... show more

Roget 379: touch, feel, handle, finger, thumb, paw, fumble, grope, grabble; twiddle, tweedle; pass the fingers over, run the fingers over; ... show more

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