Synonym word of most substandard:

bad, base, below average, below par, below standard, cheap, inadequate, junk, lemon, lousy, low-grade, poor, second-rate, shoddy, subpar, unacceptable


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Synonyms:  A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Popular