Glossary

Every game-specific term used on this wiki, in one place.

Term	Meaning
Big item	An item that fills both your hands, so you can only carry one at a time: a fuel can, Mr. Wiggles, a teddy, or a toddler. See Items.
Bag item	A small item that takes one of your six bag slots. See Items.
Brightness	A room's 0–1 light level. 0.55+ counts as "lit" for Bob; 0.62+ blocks pre-turn Grump entirely. See The Night.
Turned	The point Grump stops asking questions and starts hunting — day 4 at the latest, or sooner if his resentment hits 100. See Grump.
Resentment	Grump's internal 0–130 anger meter (capped display at 100), driving his stage and eventual turn. See Grump.
Stage	Grump's tier, 0–4, derived from resentment (or forced to 4 once turned). Gates which questions he can ask and what he does. See Grump.
Charge	Turned Grump sprinting at ×1.45 speed the instant he has a clear line of sight on you. See Events & Encounters.
Camp	Turned Grump waiting outside a hiding spot he can't reach into, breathing, for 7–12 seconds. See Events & Encounters.
Relocate	Grump teleporting to somewhere nearer and unseen instead of walking there, when his target is far away and out of sight. See Events & Encounters.
Loom	Grump's behaviour during a blackout: standing right next to you, breathing, before he's turned. See Events & Encounters.
Patrol / Investigate / Chase	Bob's three states. See Bob the Janitor.
Fear	Your 0–100 panic meter; hitting ~99.5 makes you cry automatically, the loudest noise in the game. See The Night.
Noise level	A 0–1.6 value attached to every sound you make, checked against Bob's and Grump's hearing radii. See The Night.
Threat pressure	An internal measure of how close and how actively something dangerous is to a given player, used to speed up fear gain and to decide who's "busy" enough to be ignored.
Downed	Health reaching 0: can't move properly, on a death timer (45s co-op, 4s solo) unless revived. See You (the Baby).
Fit	A temporary status from passing one of Jerry's minigames: 150 seconds of half-rate stamina drain while sprinting. See Jerry.
Busy	A player currently inside a minigame — excluded from every threat's target list until it ends. See Minigames.
Lost / Safe / Carried / Taken	A toddler's four possible states: wandering loose, delivered to your classroom, currently in your hands, or taken by Grump (gone for the run). See The Toddlers.
Search count	How many times a container has been searched today — resets each dawn, and drives the shrinking odds of repeat searches. See Searching.
Scarcity	The multiplier applied to every loot table's "nothing found" weight as the run goes on, capping around night 8. See Loot Tables.
Night modifier	A random per-night twist from night 5 onward (Storm, Overtime, Echoes, Long, Closer, Cold). See Nights & Difficulty.
Overtime	A night modifier: Bob's hearing and hiding-spot-find chance are ×1.6, plus a flat speed bonus. See Nights & Difficulty.
Echoes	A night modifier: every sound you make carries further — noise levels ×1.35. See Nights & Difficulty.
He Is Closer	A night modifier: Grump starts the night right outside your classroom door instead of wherever he was. See Nights & Difficulty.
Injured / Bandaged	About 25% of toddlers spawn hurt (whimpering, red cross) and can't be kept safe until patched up at the nurse's office. See The Toddlers.
Escape / Escape open	The front doors unlocking the morning after the final required night, letting any player end the run as a win. See Nights & Difficulty.
The crib	Where finished job rewards, and rescued toddlers, end up — in your own classroom.
The Card Kid / the Taker	A boy who shows you his card collection at the generator, then is dragged away by something called only "the Taker." Local, unavoidable, unfightable. See Card Boy & the Taker.
The Big Boys Club	A one-per-run cutscene: three older kids corner you, and Grump defends you. See The Big Boys Club.
Fit / Jerry's classes	Laps, Dumbbells, and Jump Rope — the three minigames Jerry the gym teacher forces on you. See Minigames.
Tray tiers	Gold / Nice / Soggy — the three outcomes of Meredith's lunch-line rhythm game, based on your accuracy score. See Meredith.
Host	In co-op, the player whose machine runs the actual simulation (phase clock, AI, loot rolls, quest progress) and mirrors it to everyone else. See Co-op.
Seed	The single number that deterministically generates the entire school layout — the whole basis of peer-to-peer co-op, since every client can rebuild the identical building from just this number.

Grump the Baby Destroyer Wiki · last updated 2026-09-13 · matches game commit af3955c Play the game · Game source