diligent, a. sedulous, [industrious], [assiduous], [persevering]. Antonyms: See lazy.
dillydally, v. dawdle, [dally], fritter, [trifle], [loiter].
dillydallying, n. dawdling, [loitering], [trifling], [dalliance].
dilute, v. attenuate, [thin], [weaken], [reduce].
diluter, n. diluent, attenuant.
dilution, n. attenuation, [thinning], [reduction].
dim, a. [obscure], indistinct, [faint], sullied, [blurred]. Antonyms: [bright], vivid, [intense], [clear].
dim, v. [bedim], [obscure], [darken], [dull], [eclipse], [blur], [tarnish].
diminish, v. [decrease], [reduce], [abate], [lessen], [contract], [curtail].
diminution, n. [reduction], [decrease], [abatement], decrement.