IL EST MIDI! (popular), _an exclamation used to warn one who is talking in the presence of strangers or others to be prudent and guarded in his speech_. It also means _it’s of no use, it is all in vain_. ILLICO, _m._ (popular), _grog prepared on the sly by patients in hospitals, an extemporized medicine made of sugar, spirits, and tincture of cinnamon_. IMBÉCILE À DEUX ROUES, _m._ (popular), _bicyclist_. IMBIBER (popular), s’---- le jabot, _to drink_, “to wet one’s whistle.” IMMOBILITÉ, _f._ (painters’), mercenaire de l’----, _model who makes a living by sitting to painters_. IMPAIR, _m._ (familiar), faire un ----, _to make a blunder_, “to put one’s foot in it.” (Thieves’) Impair! _look out!_ ----, acré nous v’là noblés, _look out, be on your guard, we are recognized_. IMPÉRATRICE, _f._, for impériale, _top of bus_. IMPÈRE (popular), abbreviation of impériale, _or top of bus_. IMPÉRIALE, _f._ (general), _tuft of hair on the chin_. Formerly termed “royale.” The word has passed into the language. IMPORTANCE (general), d’----, _strongly_, _vigorously_. J’te vas le moucher d’----, _I’ll let him know a piece of my mind_; _I’ll snub him_. IMPÔT, _m._ (thieves’), _autumn_. IMPRESSIONISME, _m._ (familiar), _school of artists who paint nature according to the personal impression they receive_. Some carry the process too far, perhaps, for if their retina conveys to them an impression that a horse, for instance, is indigo or ultramarine, they will reproduce the image in Oxford or Cambridge blue on the canvas. Needless to say, the result is sometimes startling. IMPRESSIONISTE, _m._, _painter of the school called_ impressionisme (which see). IMPURE, _f._ (familiar), _kept woman_, or “demi-rep.” For the list of synonyms see GADOUE. INCOMMODE, _m._ (thieves’), _lantern_, _lamp-post_. Properly _inconvenient_, thieves being lovers of darkness. INCOMMODÉ, _adj._ (thieves’), être ----, _to be taken red-handed_, _to be_ “nabbed” _in the act_. INCONOBRÉ, _m. and adj._ (thieves’), _stranger_; _unknown_. INCROYABLE, _m._ (familiar), _dandy under the Directoire at the end of the last century_. The appellation was given to swells of that period on account of their favourite expression, “C’est incroyable!” pronounced c’est incoyable, according to their custom of leaving out the r, or giving it the sound of w. For synonyms see GOMMEUX. INDEX (popular), travailler à l’----, _to work at reduced wages_. INDICATEUR, _m._ (general), _spy in the pay of the police_, “nark.” Generally a street hawker, sometimes a thief. Il y a deux genres d’indicateurs: les indicateurs sur place, tels que les marchands de chaînes de sûreté et les marchands d’aiguilles, bimbelotiers d’occasion, faux aveugles, etc., et les indicateurs errants: marchands de balais, faux infirmes, musiciens ambulants: ... Il y avait, sous l’empire, des indicateurs jusque dans le haut commerce parisien.--_Mémoires de Monsieur Claude._