Keep silence! Handsome young man in formalwear showing a sign of closing mouth and looking at camera while standing against blackboard

Backdrop Culture Education Environment History Practice Qualification Tradition Training Upbringing Accomplishments Acquirement Actions Atmosphere Attainment Aura Breeding Capacity Credentials Cultivation Deeds Framework Grounding Preparation Rearing Seasoning Body Character Customer Guy Human Individual Life Man Somebody Woman Being Cat Creature Gal Identity Individuality Joker Mortal Party Personage Personality Self Soul Specimen Spirit Unit Community Crowd Family Folk Nation Population Public Society Bodies Bourgeois Citizens Clan Commonality Folks Heads Herd Horde Humanity Humankind Humans Inhabitants Kin Masses Mob Mortals Multitude Nationality Persons Plebeians Populace Proletariat Race Tribe Animal Personal Anthropoid Biped Hominid Particular Separate Single Singular Sole Solitary Special Specific Air Aspect Light Look Mask Surface Top Appearance Cast Clock Countenance Dial Disguise Display Facet Features Finish Frontage Frontal Frontispiece Frown Glower Grimace Guise Kisser Lineaments Makeup Map Mug Obverse Paint Physiognomy Pout Presentation Profile Scowl Seeming Semblance Show Showing Silhouette Simulacrum Smirk Visage Facing Fronting Turned Brother Chap Dude Father Fellow Husband Son Beau Bloke Boyfriend Bro Gent Gentleman Grandfather Nephew Papa Sir Spouse Swain Uncle Masculine Macho Employee Laborer Peasant Trader Artisan Breadwinner Hand Help Operative Proletarian Serf Stiff Toiler Employment Field Trade Work Biz Calling Career Craft Dodge Function Game Line Livelihood Occupation Pursuit Specialty Vocation Armed forces Army Contingent Crew Delegation Gang Military Servicemen Squad Team Assemblage Assembly Band Bunch Collection Combatants Company Corps Drove Flock Forces Gathering Host Legion Number Outfit Pack Soldiers Soldiery Swarm Throng Troopers Troupe Clue Flag Gesture Harbinger Hint Manifestation Note Prediction Proof Signal Suggestion Symbol Symptom Trace Warning Wave Assurance Augury Auspice Badge Beacon Bell Caution Divination Flash Foreboding Foreknowledge Foreshadowing Foretoken Forewarning Giveaway Herald Mark Nod Omen Portent Precursor Premonition Presage Presentiment Prognostic Token Vestige Whistle Wink Design Emblem Figure Image Indication Logo Motif Pattern Type Attribute Denotation Device Numeral Regalia Representation Stamp Box Cavity Door Entrance Gate Rim Aperture Beak Chops Clam Crevice Delta Estuary Firth Funnel Gills Gob Harbor Inlet Jaws Mush Orifice Portal Trap Yap Definition Explanation Interpretation Language Phrase Remark Speech Statement Style Term Voice Word Announcement Argument Articulation Assertion Asseveration Commentary Communication Declaration Delivery Diction Elucidation Emphasis Enunciation Execution Exposition Formulation Idiom Intonation Issue Locution Mention Narration Phraseology Phrasing Pronouncement Rendition Speaking Utterance Vent Voicing Writ Lips Slate Bare Barren Untouched Unused Vacant Clean Empty Pale Plain Virgin Virginal Void White Choker Dicky Fichu Fraise Frill 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Inexperienced New Youthful Adolescent Blooming Blossoming Crude Developing Fledgling Green Growing Infant Inferior Junior Juvenile Little Modern Newborn Punk Raw Recent Tenderfoot Bad Corrupt Destructive Hateful Heinous Hideous Malevolent Malicious Nefarious Ugly Unpleasant Vicious Vile Villainous Wicked Base Foul Low Offensive Poison Reprobate Wrong Blackout Calm Lull Peace Quiet Reticence Secrecy Stillness Censorship Death Dumbness Hush Laconism Muteness Noiselessness Quiescence Quietness Quietude Reserve Sleep Speechlessness Still Sulk Sullenness Taciturnity Uncommunicativeness