| Term | Definition |
| Interloper | one who intrudes by meddling or trespassing on the rights of others |
| Internecine | very destructive to both sides in a conflict involving slaughter and carnage;; 2. Pertaining to struggle or conflict within a group, organization, or nation. |
| Interpolate | 1. to insert or add something between other parts, especially in a text or written work;; 2. To introduce material that severely alters a text or falsifies it. |
| Interregnum | any period of time when a state is without a ruler or has a provisional government, especially between the reign of a sovereign and a successor;; 2. An interval between controlling elements; an interruption in an otherwise continuous function or process |
| Interpose | 1. to insert between parts of something; to interject in a conversation;; 2. To apply pressure or influence; to meddle; to interfere |
| Juxtapose | to place together side by side |
| Propinquity | 1. nearness, proximity;; 2. kinship |
| Rapprochement | reconciliation; restoration of cordial relations, especially between two countries |
| Quiescent | at rest, dormant, motionless |
| Acquiesce | to agree or consent without any objection |
| Requiem | a mass or service for the repose of departed souls; music, poetry, or other composition for the dead |
| Unrequited | Not reciprocal, not given in payment or returned in kind |
| Abstruse | difficult to understand, complex |
| Extrude | to push or thrust out a liquid or malleable substance that retains or solidifies into a predetermined shape |
| Obtrude | 1. to force one's ideas or oneself insistently upon others;; 2. to thrust or push out; to protude noticeably, often in an undesirable way |