Physically unobstructed, uncovered, etc. • Able to have something pass through or along it. • Not covered, sealed, etc.; having an opening or aperture showing what is inside. • Not physically drawn together, folded or contracted. • Of a space, free of objects and obstructions. • Resulting from an incision, puncture or any other process by which the skin no longer protects an internal part of the body. • Unlocked or unlatched but not physically open. • In a position allowing fluid to flow. • Of a sandwich, etc.: composed of a single slice of bread with a topping. • Not of a quality to prevent communication, as by closing waterways, blocking roads, etc.; hence, not frosty or inclement; mild; used of the weather or the climate. • Able to be used or interacted with in some way. • Available for use or operation. • Actively conducting or prepared to conduct business. • Allowing entrance to visitors or the public. • Receptive. • Susceptible or vulnerable (to the stated means). • In current use; connected to as a resource. • Running. • Not hidden or restricted. • Not concealed; overt. • Of a person, not concealing their feelings, opinions, etc.; candid, ingenuous. • Public. • Written or sent with the intention that it may made public or referred to at any trial, rather than by way of confidential private negotiation for a settlement. • With open access, of open science, or both. • Made public, usable with a free licence and without proprietary components. • Of a tournament or competition, allowing anyone to enter, especially or originally irrespective of professional or amateur status. • Characterised by free-flowing play. • Not completed or finalised. • Not settled; not decided or determined; not withdrawn from consideration. • Not fulfilled or resolved; incomplete. • Not having one end joined to the other; not forming a closed loop. • In a position such that a circuit is not completed, preventing electricity from flowing. • Having different first and last vertices. • Ending in a vowel; not having a coda. • Having a free variable. • Which is part of a predefined collection of subsets of X, that defines a topological space on X. • Of a note, played without pressing the string against the fingerboard. • Of a note, played without closing any finger-hole, key or valve. • Uttered with a relatively wide opening of the articulating organs; said of vowels. • Uttered, as a consonant, with the oral passage simply narrowed without closure. • Source code of a computer program that is not within the text of a macro being generated. • Having component words separated by spaces, as opposed to being joined together or hyphenated; for example, time slot as opposed to timeslot or time-slot. • Of a club, bat or other hitting implement, angled upwards and/or (for a right-hander) clockwise of straight.