"deadest" in the adjective sense
1. dead
no longer having or seeming to have or expecting to have life
"the nerve is dead"
"a dead pallor"
"he was marked as a dead man by the assassin"
2. dead
not showing characteristics of life especially the capacity to sustain life no longer exerting force or having energy or heat
"Mars is a dead planet"
"dead soil"
"dead coals"
"the fire is dead"
3. all in, beat, bushed, dead
very tired
"was all in at the end of the day"
"so beat I could flop down and go to sleep anywhere"
"bushed after all that exercise"
"I'm dead after that long trip"
4. dead
unerringly accurate
"a dead shot"
"took dead aim"
5. dead
physically inactive
"Crater Lake is in the crater of a dead volcano of the Cascade Range"
6. dead, numb
followed by `to') not showing human feeling or sensitivity unresponsive
"passersby were dead to our plea for help"
"numb to the cries for mercy"
7. dead, deadened
devoid of physical sensation numb
"his gums were dead from the novocain"
"she felt no discomfort as the dentist drilled her deadened tooth"
"a public desensitized by continuous television coverage of atrocities"
8. dead
lacking acoustic resonance
"dead sounds characteristic of some compact discs"
"the dead wall surfaces of a recording studio"
9. dead, idle
not yielding a return
"dead capital"
"idle funds"
10. dead, stagnant
not circulating or flowing
"dead air"
"dead water"
"stagnant water"
11. dead
not surviving in active use
"Latin is a dead language"
12. dead
lacking resilience or bounce
"a dead tennis ball"
13. dead
out of use or operation because of a fault or breakdown
"a dead telephone line"
"the motor is dead"
14. dead
no longer having force or relevance
"a dead issue"
15. dead
the complete stoppage of an action
"came to a dead stop"
16. dead, drained
drained of electric charge discharged
"a dead battery"
"left the lights on and came back to find the battery drained"
17. dead
devoid of activity nothing ever happens here"
"this is a dead town
Source: WordNet® (An amazing lexical database of English)
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