dither

(redirected from dithers)
Also found in: Dictionary, Thesaurus, Encyclopedia.
Like this video? Subscribe to our free daily email and get a new idiom video every day!

all of a dither

In a nervous, confused, or agitated state. We were all of a dither waiting to meet the president at our school rally. The economy is still all of a dither after news that the country's largest corporation has filed for bankruptcy.
See also: all, dither, of

in a dither

In a nervous, confused, or agitated state. We were in a dither waiting to meet the president at our school rally. The economy is still in a dither after news that the country's largest corporation has filed for bankruptcy.
See also: dither

in a dither

confused; nervous; bothered. Mary is sort of in a dither lately. Don't get yourself in a dither.
See also: dither

in a dither

Also, all of a dither; in a flutter or tizzy . In a state of tremulous agitation, as in Planning the wedding put her in a dither, or He tried to pull himself together, but he was all of a dither, or She showed up in such a flutter that our meeting was useless. The noun dither dates from the early 1800s and goes back to the Middle English verb didderen, "to tremble"; in a flutter dates from the mid-1700s; in a tizzy dates from about 1930 and is of uncertain origin.
See also: dither

dither

(ˈdɪðɚ)
n. a state of confusion. (see also in a dither.) He can’t seem to get out of this dither he’s in.

in a dither

mod. confused; undecided. Don’t get yourself in a dither.
See also: dither

in a dither, all

In a jittery, agitated state. This expression dates from the early 1800s, when it also was put as of a dither. The noun dither comes from the Middle English verb didderen, meaning “to tremble.” A newer synonym is in a tizzy, dating from the first half of the 1900s. Its origin is not known.
See also: all
References in periodicals archive ?
They show Major as Mr Panic, Mr Weak, Mr Spineless and Mr Dither.
Dither is a random noise added to a signal prior to it (re)quantization in order to control the statistical properties of the quantization error (Wannamaker et al., 2000).
Without dither the output of ideal ADC has quantization error
Positive contribution of dither is lower peak-to-peak value of conditional mean E[[epsilon]|s] compared to error e without dithering.
in (Mariano & Ramos, 2006) the first and the second moment of quatization error were analyzed for sinusoidal input signal without dither. As we prefer evaluation of moments from characteristic function (CF) it is now favorable to write conditional CF of error e resulting from area sampling process
where q is quantization step and [PSI]=2[pi]/q, [[PHI].sub.d] is CF of dither. From CF moments of error E[[[epsilon].sup.m]|s] could be simply found using m-th derivatives of CF in u=0
Assuming symmetrical dither with zero mean the CF [[PHI].sub.d] of dither should be real even function and then
In (Skartlien & 0yehaug, 2005) it was derived that without averaging (N=1) it holds [RMSE.sub.T.sup.2](1)=[[sigma].sub.d.sup.2]+q/12, where [[sigma].sub.d] is standard deviation (STD) of dither, which could be proved by deduction from second derivative of (3).