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The Britannica Dictionary

lackluster

1 ENTRIES FOUND:

lackluster (adjective)

lackluster (US) adjective

or British lacklustre /ˈlækˌlʌstɚ/

lackluster (US)

adjective

or British lacklustre /ˈlækˌlʌstɚ/

Britannica Dictionary definition of LACKLUSTER

[more lackluster; most lackluster]

: lacking excitement or interest

a lackluster [=dull, mediocre] performance
His writing can be lackluster [=uninspired] at times.

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