The lorry I had was not articulated! (5)
I believe the answer is:
rigid
'not articulated' is the definition.
The answer and definition are different parts of speech. However, past participle verbs and adjectives sometimes mean the same thing.
'the lorry i had' is the wordplay.
'the lorry' becomes 'rig' (I can't justify this - if you can you should give a lot more credence to this answer).
'i had' becomes 'i'd' (contraction).
'rig'+'id'='RIGID'
'was' acts as a link.
Can you help me to learn more?
(Other definitions for rigid that I've seen before include "Frozen" , "Stiff, unmoving" , "Stiff and inflexible" , "Stiff, unyielding" , "Not flexible" .)