Than

used in comparatives of superiority and inferiority:

• (ADJ-er than, more ADJ / ADV / N(s) than</span>)
• (less ADJ / ADV / N than / fewer Ns than</span>)

There is no equivalent morpheme to -er for comparisons of inferiority. As a result, the structure not as ADJ as is frequent, especially with short adjectives. Cf. as.