Re*miss" (r?-m?s"), a. [L. remissus, p. p. of remittere to send back, relax. See Remit.] Not energetic or exact in duty or business; not careful or prompt in fulfilling engagements; negligent; careless; tardy; behindhand; lagging; slack; hence, lacking earnestness or activity; languid; slow.

Thou never wast remiss, I bear thee witness.

These nervous, bold; those languid and remiss.

Its motion becomes more languid and remiss.

Syn. -- Slack; dilatory; slothful; negligent; careless; neglectful; inattentive; heedles; thoughtless.

Re*miss", n. The act of being remiss; inefficiency; failure. [Obs.] "Remisses of laws." Puttenham.

Re*miss" (r?-m?s"), a. [L. remissus, p. p. of remittere to send back, relax. See Remit.] Not energetic or exact in duty or business; not careful or prompt in fulfilling engagements; negligent; careless; tardy; behindhand; lagging; slack; hence, lacking earnestness or activity; languid; slow.

Thou never wast remiss, I bear thee witness.

These nervous, bold; those languid and remiss.

Its motion becomes more languid and remiss.

Syn. -- Slack; dilatory; slothful; negligent; careless; neglectful; inattentive; heedles; thoughtless.

Re*miss", n. The act of being remiss; inefficiency; failure. [Obs.] "Remisses of laws." Puttenham.

• at fault; failing to fulfill responsibility, duty, or obligations
       I would certainly be remiss if I did not give credit where credit was due.