In*fix" (?), v. t. [imp. & p. p. Infixed (?); p. pr. & vb. n. Infixing.] [L. infixus, p. p of infigere to infix; pref. in- in + figere to fix: cf. F. infixer. See Fix.] 1. To set; to fasten or fix by piercing or thrusting in; as, to infix a sting, spear, or dart. Shak.

The fatal dart a ready passage found,
And deep within her heart infixed the wound.

2. To implant or fix; to instill; to inculcate, as principles, thoughts, or instructions; as, to infix good principles in the mind, or ideas in the memory.

In"fix (?), n. Something infixed. [R.] Welsford.

• to instill
  
• (linguistics) to insert a morpheme inside a word
  
• (linguistics) a morpheme inserted inside a word
  
  German
• infix