The phrase "as though still" is correct and usable in written English.
It can be used to describe a situation or state that appears to be unchanged or unaffected, often in a metaphorical sense.
Example: "She stood there, as though still, lost in her thoughts while the world around her moved on."
Alternatives: "as if frozen" or "as though unmoving".
Even when they're absent, he swats around his head as though still under attack.
The house was shuttered and quiet as though still in mourning.
He shakes his head as though still not quite believing it happened.
"Then you move to Los Angeles and find hundreds of comics who will talk to you about Monty Python for months on end!" And he laughs, as though still shocked at the discovery.
The couple are pleased and interested by the science of their photograph, and have learned a great deal about colour perception, yet they talk wistfully, as though still wondering whether something a little better might have passed them by.
This hard-puller twice failed to gain a clear run before finishing well after being settled near the back at Bath and Lingfield, shaping as though still in form.
She will leave Peter directionless as well as bereaved, though still looking like a homespun Gregory Peck and leaning against a white picket fence.
Field emission may result in voltage breakdown across the cathode anode gap, or a punch-through failure of the insulator holding off the cathode potential, as well as lesser though still serious problems.
But while Israel views the fire from Syria as unintentional, though still unacceptable, the rockets from Gaza are deliberately aimed at population centers.
But on Sunday, while Israel viewed the fire from Syria as unintentional, though still unacceptable, the rockets from Gaza were deliberately aimed at population centers.
Looking at the international literature our rate of non-fulfilment of AEP criteria is not as deviating, though still high.
