致す

Etymology
From. Derived as the transitive/causative counterpart to intransitive verb, originally meaning the same as causative conjugation.

Verb

 * 1) to deliver; to send
 * 2) to have an effect; to lead to a consequence, especially a bad one
 * 3)  to do: the humble version of
 * 4)  to masturbate
 * 5)  to have sex
 * 1)  to masturbate
 * 2)  to have sex
 * 1)  to have sex

Usage notes
In modern Japanese, this word is generally written in hiragana as, with the kanji spelling used in more formal writing.

When speaking in formal situations, いたす is used in place of する by the speaker in deference to the listener. This is part of the subset of Japanese formal language referred to as "humble" language. This word has also found its way into certain common expressions, such as.