substandard

As adjectives the difference between substandard and suboptimal

is that substandard is of inferior quality; not meeting the minimum quality requirements while suboptimal is less than optimal.

As adjectives the difference between substandard and weak

is that substandard is of inferior quality; not meeting the minimum quality requirements while weak is lacking in force (usually strength) or ability.

As adjectives the difference between substandard and insubstantial

is that substandard is of inferior quality; not meeting the minimum quality requirements while insubstantial is lacking substance; not real or strong.

As adjectives the difference between substandard and meaningless

is that substandard is of inferior quality; not meeting the minimum quality requirements while meaningless is lacking meaning.

As adjectives the difference between substandard and subpar

is that substandard is of inferior quality; not meeting the minimum quality requirements while subpar is being of less than a traditional or accepted standard.

Substandard is a related term of infamous.

As adjectives the difference between substandard and infamous

is that substandard is of inferior quality; not meeting the minimum quality requirements while infamous is having a bad reputation, disreputable; of bad report; notoriously vile; detestable; widely known, especially for something bad.

Tainted is a related term of substandard.

As adjectives the difference between tainted and substandard

is that tainted is corrupted or filled with imperfections while substandard is of inferior quality; not meeting the minimum quality requirements.

As a verb tainted

is (taint).

Substandard is a related term of obnoxious.

As adjectives the difference between substandard and obnoxious

is that substandard is of inferior quality; not meeting the minimum quality requirements while obnoxious is extremely unpleasant, offensive, very annoying, odious or contemptible.

Substandard is a related term of irascible.

As adjectives the difference between substandard and irascible

is that substandard is of inferior quality; not meeting the minimum quality requirements while irascible is easily provoked to outbursts of anger; irritable.

Evil is a related term of substandard.

As adjectives the difference between evil and substandard

is that evil is intending to harm; malevolent while substandard is of inferior quality; not meeting the minimum quality requirements.

As a noun evil

is moral badness; wickedness; malevolence; the forces or behaviors that are the opposite or enemy of good.