English testy

← Middle English testif (mention)

← French tête (mention)

← French têtu (mention)

← Old French testu (mention)

← Old French teste (mention)

← Old French -u (mention)

→ English testiness (suffix)

→ English testily (suffix)

→ English tettish (mention)

→ English untesty (prefix)

→ Middle English testif (mention)