at heart, deep down

A person's personality is more important than their physical looks.

plural of insert song

A piece of incidental music in anime.

plural of inside straight draw

A key that when pressed switches between the overtype mode and the insert mode of a computer.

(sports) To make a player (especially a defender) turn the wrong way and hence get past him. / to place the outer surface inside and put the inside surface to the outside.

(medicine) The insertion of sperm directly into a woman's uterus, typically as a way of increasing the chances of conception.

(narratology) A literary device in which the author writes himself or herself into the story as a character.

(rare, obsolete) Synonym of sidelong. / With the inner and outer surfaces reversed.