continuing or valid to final destination. expressing movement into one side and out of other side of opening etc.. Allowing you to pass between, or to.

word group forming conceptual unit. Sets of words used together. To choose words to say what you mean clearly.

likely or prone to be affected by. conditionally upon. The person or thing that does the action of a verb. cause or force person or thing to undergo.

Being in attendance; being there; having turned up. Verb tense indicating an action is happening now. To give a speech or presentation.

officially compulsory, or otherwise considered essential. To need something, to make it necessary.

To do something without stopping, or after pausing.

university academic of highest rank.

subject to conditions being met. Clause or sentence beginning with 'if' or 'unless'.

denoting pronoun that refers back to subject of clause in which it is used. reflexive word.

comply with rules or laws.

(of verb or sense or use of verb) not taking direct object. intransitive verb.

Helping or supporting a function or group. Group of workers who provide help and assistance.

To support someone, e.g. singer or comedian.

Nonfinite form of the verb, e.g. -ing or -ed forms.