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inscrutable impossible to comprehend or interpret; mysterious.
inseam the seam on the inner side of a pant leg, from the crotch to the hem.
insect any of a group of small invertebrate animals that have segmented bodies, three pairs of legs, and usually one or two sets of wings. An insect's body is segmented into head, thorax, and abdomen. [3 definitions]
insecticide a substance used to kill insects.
insectifuge a substance used to drive away insects.
insectivore an animal or plant that eats insects. [2 definitions]
insectivorous eating insects primarily or exclusively. [2 definitions]
insecure having insufficient protection; not safe or secure. [3 definitions]
insecurity the condition or quality of having insufficient protection or not being safe. [3 definitions]
inseminate to place sperm in the womb of (a female), esp. for reproduction. [2 definitions]
insensate not having feelings or sensations; inanimate. [3 definitions]
insensible without normal sensations; unconscious. [4 definitions]
insensitive lacking normal physical sensation or response. [2 definitions]
insentient lacking perception or consciousness; inanimate.
inseparable impossible or difficult to divide or to conceive of as separate; tending to remain together.
insert to put or cause to be put in, into, or within. [2 definitions]
insertion the act of inserting, or something that is or will be inserted.
in-service taking place or available while one is an employee.
inset something placed in or within something else; insert. [3 definitions]
inshore toward or near the coast. [2 definitions]
inside in the inner part of; within. [9 definitions]