dwindle
/ˈdwɪnd(ə)l/verb
To become steadily smaller or weaker over time.
Example sentences
- “Attendance at the weekly meetings dwindled until only a few people came.”
- “As winter went on, our supply of firewood began to dwindle.”
Implies gradual shrinking toward very little: savings dwindle, crowds dwindle. 'Dwindling supplies' is the common participle phrase.