Adjective

(en adjective)

Manifesting, exercising, or favoring rigour; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration.

*{{quote-magazine, date=2013-08-03, volume=408, issue=8847, magazine=(The Economist)

, title= Boundary problems , passage=Economics is a messy discipline: too fluid to be a science, too rigorous to be an art. Perhaps it is fitting that economists’ most-used metric, gross domestic product (GDP), is a tangle too. GDP measures the total value of output in an economic territory. Its apparent simplicity explains why it is scrutinised down to tenths of a percentage point every month.}}

Severe; intense; inclement; as, a rigorous winter.

Violent.

Adjective

(en-adj)

(lb) Subject to death; mortal.

*:

*:And whan he cam to the sacrament of the masse / and had done / anone he called Galahad and sayd to hym come forthe the seruaunt of Ihesu cryst and thou shalt see that thou hast moche desyred to see / & thenne he beganne to tremble ryght hard / whan the dedely flesshe beganne to beholde the spyrytuel thynges

*Wyclif Bible, (w) i. 23

*:The image of a deadly man.

Causing death; lethal.

Aiming or willing to destroy; implacable; desperately hostile.

:

*(William Shakespeare) (1564-1616)

*:Thy assailant is quick, skillful, and deadly .

(lb) Very accurate (of aiming with a bow, firearm, etc.).

*

*:But then I had the [massive] flintlock by me for protection. ¶, and a 'bead' could be drawn upon Molly, the dairymaid, kissing the fogger behind the hedge, little dreaming that the deadly tube was levelled at them.

(lb) Very boring.

*

*:“I don't mean all of your friends—only a small proportion—which, however, connects your circle with that deadly , idle, brainless bunch—the insolent chatterers at the opera, the gorged dowagers, the worn-out, passionless men, the enervated matrons of the summer capital,!”

(lb) Excellent, awesome, cool.